老師要提前規(guī)劃好每節(jié)課的教學(xué)課件，這是必不可少的。因此，我們教師要認(rèn)真地編寫(xiě)教案課件，以便在教學(xué)過(guò)程中充分展示知識(shí)內(nèi)容，使學(xué)生能夠理解和掌握知識(shí)。如果你對(duì)“高中if從句教案”還有疑問(wèn)，本文將為你解答。希望這篇文章能對(duì)你有所幫助，記得收藏哦！
    高中if從句教案【篇1】
    高中英語(yǔ)賓語(yǔ)從句課件
    
    賓語(yǔ)從句(object clauses)
    1、概述用作賓語(yǔ)的從句叫做賓語(yǔ)從句。賓語(yǔ)從句的位置與陳述句基本結(jié)構(gòu)中的賓語(yǔ)相同。賓語(yǔ)從句可作謂語(yǔ)動(dòng)詞的賓語(yǔ)，也可以作介詞和非謂語(yǔ)動(dòng)詞（動(dòng)詞不定式、動(dòng)名詞、分詞）和某些形容詞的賓語(yǔ)。賓語(yǔ)從句可以由從屬連詞that whether、if，關(guān)系代詞what, who, whose, which和關(guān)系副詞when、where、how、why等引導(dǎo)。
    He said he wanted to go to town.他說(shuō)他想去城里。
    I hope you'll be better soon.我希望你能很快好起來(lái)。
    I’m so glad that you were able to come to this party.你能設(shè)法抽空出席這個(gè)交際會(huì)，我很高興。
    I know nothing about it except what I have read in the papers.除了在報(bào)上讀到的以外,我對(duì)這件事一無(wú)所知。
    Most of the Chinese people usually go to work on the bike except when it rains.除了雨天,大多數(shù)中國(guó)人一般都騎自行車(chē)上班。
    He asked me whether she was coming.他問(wèn)我，她來(lái)還是不來(lái)。
    2、作動(dòng)詞賓語(yǔ)
    （1）由從屬連詞that引導(dǎo)的賓語(yǔ)從句。that引導(dǎo)賓語(yǔ)從句時(shí)，只起引導(dǎo)詞作用，在句中不做成分，在口語(yǔ)和非正式文體中常省去。
    I think (that) he'll be right in a few days.我認(rèn)為他幾天后就會(huì)好的。
    I wish（that）she would understand me.我希望她理解我。
    （2）由關(guān)系代詞what, who, whose, which引導(dǎo)的賓語(yǔ)從句，在句中作成分，即主語(yǔ)、賓語(yǔ)、表語(yǔ)和定語(yǔ)，關(guān)系代詞在句中不能省略。
    A computer can only do what you have instructed it to do．計(jì)算機(jī)只能按人的指令去做。
    Do you know whom they are waiting for?你知道他們?cè)诘日l(shuí)嗎？
    He asked whose dictionary it was.他問(wèn)這是誰(shuí)的字典。
    He can't tell which method they will use for the experiment.他不能斷定他們會(huì)用哪一種方法做實(shí)驗(yàn)。
    （3）關(guān)系副詞when，where，how，why等引導(dǎo)賓語(yǔ)從句。關(guān)系副詞when，where，how，why既有疑問(wèn)意義，又起連接作用，而且在賓語(yǔ)從句中充當(dāng)各種狀語(yǔ)，分別表時(shí)間、地點(diǎn)、方式、原因。在句中不能省略。
    Please tell me when we shall discuss our plan.請(qǐng)告訴我我們將何時(shí)討論計(jì)劃。
    I don't know where we are going to have the meeting.我不知道我們將在哪里開(kāi)會(huì)。
    Will you tell me how I can get to the station？你能告訴我如何能到車(chē)站嗎？
    Do you know why he said that?你知道他為什么說(shuō)那件事嗎？
    I remember when this used to be a quiet village．我記得這里曾經(jīng)是一個(gè)僻靜的村莊。
    （4）由從屬連詞whether或if引導(dǎo)的賓語(yǔ)從句。
    I wonder whether (if) daughters are valued as much as sons in the countryside.我想知道在農(nóng)村女兒是否和兒子一樣受到重視。
    I don't know whether (if) you are willing to help me.我不知道你是否愿意幫我。注意：whether和if的區(qū)別，請(qǐng)參考概述部分。（5）動(dòng)詞+間接賓語(yǔ)+賓語(yǔ)從句。動(dòng)詞如：advise, ask, inform, promise, question, remind, show, teach, tell, warn等，賓語(yǔ)從句前可以有一個(gè)間接賓語(yǔ)，這個(gè)賓語(yǔ)有時(shí)可以省略，有的不能省略。
    He has informed me when they are to discuss my proposal.他已經(jīng)通知我們將什么時(shí)候討論我的建議。(me不可省略)
    She promised (us) that she would give us more help later on.她答應(yīng)以后給我們更多的幫助。(us可省略)
    3、作介詞賓語(yǔ)
    It depends on whether he is coming or not.這要看他是否會(huì)來(lái)。
    I was curious as to what we could do next.我想知道下一步我們?cè)撟鍪裁?。注意：that引導(dǎo)的賓語(yǔ)從句只在in, but, except, besides等少數(shù)介詞后作賓語(yǔ)，形成固定搭配，in that在于（因?yàn)椋琤ut that要不是(只是)，except that除了……。
    The higher income tax is harmful in that it may discourage people from trying to earn more.所得稅過(guò)高是有害的，因?yàn)樗赡苁谷瞬辉付噘嶅X(qián)。
    His paper is perfect except that there were some misprints.除了一些印刷錯(cuò)誤之外，這篇論文很好。
    4、作形容詞賓語(yǔ)。
    No one can be sure what man will look like in a million years．誰(shuí)也不知道一百萬(wàn)年后人類(lèi)會(huì)變成什么樣子。
    I am not certain whether I have met him before.我不能肯定從前是否見(jiàn)過(guò)他。
    I'm sorry (that) you're ill.你病了，我很難過(guò)。注意：that引導(dǎo)的從句在下列形容詞后面作賓語(yǔ)，that可以省略。anxious, aware, certain, confident, convinced, determined, glad, proud, surprised, worried, sorry, thankful, ashamed, disappointed, annoyed, pleased, hurt, satisfied, content, proud等。
    I'm sure (that) he'll help you.我確信他會(huì)幫助你。
    I'm glad (that)he has passed the exam.我很高興，他考試及格了。
    5、it充當(dāng)形式賓語(yǔ)，真正的賓語(yǔ)---賓語(yǔ)從句后置。正如我們常用it充當(dāng)形式主語(yǔ)代替主語(yǔ)從句一樣，我們也常用it用作形式賓語(yǔ)代替賓語(yǔ)從句，把真正的賓語(yǔ)從句后置。特別是帶復(fù)合賓語(yǔ)的句子中。在這種結(jié)構(gòu)中that不可省略。有下列幾種情況：（1）在believe, consider, declare, estimate, fancy, feel, find, guess,hear, imagine, know, make, prove, reckon, think, understand等動(dòng)詞接復(fù)合賓語(yǔ)（賓語(yǔ)＋賓補(bǔ)）時(shí)，要用it作形式賓語(yǔ)。
    We find it difficult that we should finish the work on time．我發(fā)現(xiàn)我們按時(shí)完成工作有困難。
    She thinks it wrong that he didn't answer the phone．她認(rèn)為他不接電話(huà)是不對(duì)的。
    （2）在like，enjoy，love,hate,take等表“喜怒哀樂(lè)”的動(dòng)詞，后若要跟賓語(yǔ)從句時(shí)，需跟形式賓語(yǔ)it。
    I hate it when people talk with their mouths full.我不喜歡人們滿(mǎn)口飯說(shuō)話(huà)。
    I like it that everyone passed the exam．都通過(guò)了考試我很喜歡。
    （3）由動(dòng)詞和介詞構(gòu)成的短語(yǔ)動(dòng)詞后接that賓語(yǔ)從句時(shí)，要用形式賓語(yǔ)。
    We are thinking of it that we'll lend you some money．我正在考慮借給你錢(qián)的事。
    I shall see to it that he is taken good care of when you are absent.你不在的時(shí)候我負(fù)責(zé)把他照顧好。（4）用于“動(dòng)詞+賓語(yǔ)+介詞短語(yǔ)”的句型中。
    Keep it in mind that you have to be home by ten o’clock.要記住你得十點(diǎn)鐘之前回家。
    We took it for granted that he would come.我們認(rèn)為他來(lái)是當(dāng)然的'。
    6、不可直接跟that從句的動(dòng)詞。下列動(dòng)詞不可直接接that從句：ask, refuse, let, like, cause, force, condemn, admire, entreat, dislike（厭惡）, overlook, love, help, take, forgive, bid, hate, hear（聽(tīng)見(jiàn)）, see（看見(jiàn)）, want（想要）等，但可用it, the fact做媒介，后接that從句；或接動(dòng)名詞、不定式。
    He overlooked it that he had made another mistake.(正確)他忽視了一件事，他又犯了一個(gè)錯(cuò)誤。
    He overlooked the fact that he had made another mistake. (正確)
    He overlooked that he had made another mistake.(錯(cuò)誤)
    I admire it that they won the match. (正確)
    I admire the fact that they won the match. (正確)我很羨慕，他們贏得了比賽。
    I admire that they won the match. (錯(cuò)誤)
    7、that引導(dǎo)賓語(yǔ)從句的省略。（1）主句謂語(yǔ)動(dòng)詞是agree, argue, hold, learn, maintain, observe, contend, conceive, reckon, remark, state, suggest, assume, announce, calculate, indicate等時(shí)，其后賓語(yǔ)從句的引導(dǎo)詞that一般不可省略；主句謂語(yǔ)動(dòng)詞是hear, know, say, see, confess consider, declare, understand, propose等時(shí)，其后賓語(yǔ)從句的引導(dǎo)詞that可以省略，也可以不省略；主句謂語(yǔ)動(dòng)詞是think, suppose, believe, presume, dare say等時(shí)，其后賓語(yǔ)從句的引導(dǎo)詞that可以省略。
    He suggested that we should set off at 8 o’clock tomorrow morning.他建議我們明天早晨8點(diǎn)走。(that不可省略)
    I think (that) this is very important.我認(rèn)為這很重要。(that可省略)（2）當(dāng)一個(gè)句子很復(fù)雜，句中有多個(gè)狀語(yǔ)時(shí)，that不可省略；或者一個(gè)句子有多個(gè)并列的賓語(yǔ)從句時(shí)，特別第一個(gè)賓語(yǔ)從句特別長(zhǎng)，后面的賓語(yǔ)從句的that不可省略；謂語(yǔ)動(dòng)詞與that從句之間有插入語(yǔ)時(shí)，that不可省去。
    He said you needn't worry and that he would help you .他說(shuō)你沒(méi)有必要著急，他會(huì)幫助你的。（said之后可省去that，但第二個(gè)that不可省去）
    We decide, as he has suggested, that we will start out tomorrow.就像他建議的那樣，我們決定明天動(dòng)身。
    8、否定轉(zhuǎn)移與省略（1）如果主句的謂語(yǔ)動(dòng)詞是“think, consider, suppose, believe, expect, fancy, guess, reckon, imagine等，主語(yǔ)是第一人稱(chēng)的一般現(xiàn)在時(shí)態(tài)，其后的賓語(yǔ)從句如含有否定意義，一定要把否定詞一道主句謂語(yǔ)上，從句謂語(yǔ)動(dòng)詞用肯定形式。
    I don’t think he can do it better than me.我想他不會(huì)比我干得好。
    I don’t believe he treated the child like that.我相信他不會(huì)那樣對(duì)待孩子的。
    （2）如果think, consider, suppose, believe, expect, fancy, guess, reckon, imagine等前有副詞或表示強(qiáng)調(diào)的do, does, did；或者同其它詞構(gòu)成并列謂語(yǔ)；或者不以現(xiàn)在時(shí)出現(xiàn)；或者用作插入語(yǔ)中。這時(shí)候不用否定轉(zhuǎn)移。
    I really expect she didn’t say that to him.我確實(shí)希望她不和他說(shuō)那件事。
    I think and hope that he won’t be deceived by the man.我認(rèn)為也希望他不會(huì)被那個(gè)人欺騙。
    （3）think, consider, suppose, believe, expect, fancy, guess, reckon, imagine等此類(lèi)動(dòng)詞后，在簡(jiǎn)略答語(yǔ)中，用so替代前文肯定的賓語(yǔ)從句；若替代一個(gè)否定的賓語(yǔ)從句，用not或not…so替代前文整個(gè)從句。
    -I believe we've met somewhere before．我認(rèn)為我們從前在哪見(jiàn)過(guò)。
    -No，I don't think so．沒(méi)有，我認(rèn)為我們以前沒(méi)見(jiàn)過(guò)。
    -Do you think it's going to rain over the weekend？你認(rèn)為這周末會(huì)下雨嗎？
    -I believe not．我認(rèn)為不會(huì)。注意：hope只能說(shuō)I hope not一種形式，因?yàn)閔ope不能否定轉(zhuǎn)移。
    9、時(shí)態(tài)的呼應(yīng)與語(yǔ)序。
    在賓語(yǔ)從句中只能用陳述句語(yǔ)序，時(shí)態(tài)呼應(yīng)上要遵循以下三條原則：（1）如果主句謂語(yǔ)是一般現(xiàn)在時(shí)或?qū)?lái)時(shí)，賓語(yǔ)從句的謂語(yǔ)可根據(jù)意思的需要使用任何一種時(shí)態(tài)。
    Can you make sure where Alice has put the gold ring？你能確定愛(ài)麗絲把金戒指放到什么地方了嗎？
    They have no idea at all where he has gone．他們一點(diǎn)也不知道他去了哪。
    Do you know who he was talking with at eight last night？你知道他昨晚和誰(shuí)一起說(shuō)話(huà)嗎？
    （2）如果主句謂語(yǔ)是一般過(guò)去時(shí)，賓語(yǔ)從句要用表示過(guò)去的某一時(shí)態(tài)。
    He said he would come to see us the next day.他說(shuō)他明天將來(lái)看我們。
    I wanted to know whether he had been to Beijing.我想知道他是否去過(guò)北京。
    （3）如果賓語(yǔ)從句是表示客觀(guān)事實(shí)、真理等，不管主句是什么時(shí)態(tài)，賓語(yǔ)從句一律用一般現(xiàn)在時(shí)。
    Dick asked Lucy how old she is．迪克問(wèn)露斯她多大了。
    The teacher said the sun rises in the east．老師說(shuō)太陽(yáng)從東方升起。
    要點(diǎn)
    一、高中賓語(yǔ)從句要點(diǎn)之時(shí)態(tài)的呼應(yīng)
    1.如果主句是一般現(xiàn)在時(shí)、一般將來(lái)時(shí)或祈使句時(shí),賓語(yǔ)從句可根據(jù)情況使用各種時(shí)態(tài)。例如:
    I hear she is here today(she was here yesterday/ she will be here tomorrow.)
    2.如果主句是一般過(guò)去時(shí),賓語(yǔ)從句應(yīng)使用過(guò)去時(shí)態(tài)的某種形式。例如:
    He said he was watching TV(he had swept the floor/ he would play football after school)。
    3.如賓語(yǔ)從句所敘述的是客觀(guān)事實(shí)、自然現(xiàn)象或科學(xué)真理等,從句不受主句時(shí)態(tài)限制,仍用一般現(xiàn)在時(shí)。例如:
    Our teacher told us that light travels faster than sound.
    二、高中賓語(yǔ)從句要點(diǎn)之引導(dǎo)詞的使用
    1.當(dāng)賓語(yǔ)從句由陳述句變化而來(lái)時(shí),用that來(lái)引導(dǎo)從句,that常無(wú)具體意義,一般可省略。例如:
    Lin Tao thought(that)the TV play was very boring.
    2.當(dāng)賓語(yǔ)從句是由一般疑問(wèn)句變化而來(lái)時(shí),要用if或whether來(lái)引導(dǎo)從句。例如:
    David asked his mother if/ whether she liked the dinner last night.
    3.當(dāng)賓語(yǔ)從句是由特殊疑問(wèn)句變化而來(lái)時(shí),原句中的疑問(wèn)詞充當(dāng)連接代詞(如who, whose, what, which)或連接副詞(如when, where, why, how),引導(dǎo)賓語(yǔ)從句。例如:
    Do you know what we can do on the island?
    I don’t know why Jane was late for school this morning.
    三、高中賓語(yǔ)從句要點(diǎn)之語(yǔ)序的陳述化
    賓語(yǔ)從句一般要用陳述句語(yǔ)序。例如:
    When did he leave? I want to know. →I want to know when he left.
    Does the shop close at six every day? Do you know? →Do you know if/ whether the shop closes at six every day?
    四、高中賓語(yǔ)從句要點(diǎn)之否定轉(zhuǎn)移
    當(dāng)主句的謂語(yǔ)動(dòng)詞為think, believe, suppose等動(dòng)詞,且主語(yǔ)為第一人稱(chēng)時(shí),從句的否定要轉(zhuǎn)移到主句上。例如:
    I don’t believe he is here on time, is he?
    I don’t think Tom is the best student in his class, is he?
    高中if從句教案【篇2】
    語(yǔ)序?yàn)関.+主語(yǔ)+謂語(yǔ)+由if、whether引導(dǎo)賓語(yǔ)從句；
    連接賓語(yǔ)從句的從屬連詞主要有that,if,whether，和疑問(wèn)詞（what， how， where， when ...)。
    that引導(dǎo)表示陳述句的賓語(yǔ)從句，
    if和whether，whether...or not引導(dǎo)表示“是否”的一般疑問(wèn)句的賓語(yǔ)從句。
    連接代詞主要有who,whom,whose,what,whoever,whomever,whosever,whatever,whichever等。
    連接代詞一般指疑問(wèn)，但what,whatever除了指疑問(wèn)外，也可以指陳述。
    連接副詞主要有when,where,why,how,whenever,wherever,however等。
    例句：
    He didn’t tell me when we should meet again.
    他沒(méi)有告訴我什么時(shí)候我們能再見(jiàn)面。
    大多數(shù)及物動(dòng)詞都可以帶賓語(yǔ)從句。
    部分“動(dòng)詞+副詞”結(jié)構(gòu)也可以帶賓語(yǔ)從句。
    動(dòng)詞短語(yǔ)也可以帶賓語(yǔ)從句，常見(jiàn)的這些詞有：
    make sure（確保）、make up one’s mind（下決心）、keep in mind（牢記）
    ①動(dòng)詞find,feel,consider,make,believe,think等后面有賓語(yǔ)補(bǔ)足語(yǔ)的時(shí)候，則需要用it做形式賓語(yǔ)而將that賓語(yǔ)從句后置。
    ②有些動(dòng)詞帶賓語(yǔ)從句時(shí)需要在賓語(yǔ)從句前加it（雙賓語(yǔ)）這類(lèi)動(dòng)詞主要有：hate,take,owe,have,see to.award,lend.hand,mail,offer,pass,pay,post,read,return,show,teach,tell
    用whether之類(lèi)的介詞賓語(yǔ)從句。
    用that,if引導(dǎo)的介詞賓語(yǔ)從句，有時(shí)候except,but,besides三個(gè)介詞后可見(jiàn)到that引導(dǎo)的賓語(yǔ)從句。
    有些形容詞具有動(dòng)詞的含義，所以也可以帶一個(gè)賓語(yǔ)從句；
    例句：
    I am sorry I am late.
    I am glad that you can join us.
    Are you sure his answer is right?
    常用來(lái)引導(dǎo)賓語(yǔ)從句的形容詞有：sure,certain,glad,pleased,happy,sorry,afraid,satisfied,surprised
    if和whether在作“是否”理解時(shí)，引導(dǎo)賓語(yǔ)從句常放在動(dòng)詞know,ask,care,wonder,find out等之后，介詞后一般不用if。
    少數(shù)動(dòng)詞，如：leave,put,discuss,doubt后的賓語(yǔ)從句常用whether。
    whether后可以加or not,但是if不可以。
    在不定式前只能用whether。
    一般“no matter”后表示“是否”用whether而不用if。
    存在以下情況時(shí)引導(dǎo)詞that不可省略：
    that作learn,suggest,explain,agree,wonder,prove,mean,state,feel,hold等動(dòng)詞的賓語(yǔ)。
    高中if從句教案【篇3】
    教學(xué)過(guò)程
    1、對(duì)上節(jié)課課后作業(yè)中的問(wèn)題進(jìn)行查漏補(bǔ)缺；
    2、導(dǎo)入：
    e.g. She is a beautiful girl.
    She is a beautiful girl who drives me crazy.
    1、定語(yǔ)從句：在復(fù)合句中，修飾某個(gè)名詞或代詞的句子（做這個(gè)名詞或代詞的
    定語(yǔ)）叫定語(yǔ)從句，定語(yǔ)從句一般放在被修飾的名詞或代詞后面。
    關(guān)系代詞的種類(lèi)：
    關(guān)系代詞：that, which, who, whom, whose, as
    a、There she saw a wall of water that was quickly advancing towards her.
    b、 In Japan, someone who sees another person making the gesture will think it means money.
    c、Visitors can go on exciting rides where they can feel what it is like to do the things they have seen their heroes do in the movie.
    d、Oprah Winfrey is a black woman whose rise to fame is an inspiring story.
    限定性定語(yǔ)從句：從句對(duì)先行詞進(jìn)行必要的描述或說(shuō)明，對(duì)先行詞起修飾限定作用，從句與先行詞緊密相連，缺少它則句義顯得不完整，一般不用逗號(hào)隔開(kāi)。 非限定性定語(yǔ)從句：對(duì)先行詞進(jìn)行補(bǔ)充說(shuō)明，解釋?zhuān)c先行詞關(guān)系松散，用逗號(hào)隔開(kāi)。
    1、The man who gave me this book is Tom .(限定性)
    2、Tom,who is reading a book ,is my classmate (非限定性)
    1、who指人，在定語(yǔ)從句中作主語(yǔ)。
    e.g. The man who is sitting under the tree is a German .
    2、Whom指人，在句中做賓語(yǔ)，可省略，但在做介詞的賓語(yǔ)是只能用whom,不能用who。關(guān)系代詞前有介詞時(shí)不能省略。
    e.g. I know the girl (whom) the teacher is speaking to .
    I know the girl to whom the teacher is speaking .
    e.g. Everyone heplps the child whose parents are dead.
    Theyare the lazy students whose homework wasn’t handed in .
    4、that 指人或物，多指物，作主語(yǔ)（不能省略）或賓語(yǔ)（可省略）
    e.g. He is the finest comrade that has helped us .
    This is a plant that grows in the north .
    5、which ,指物，在句中做主語(yǔ)（不能省略），或賓語(yǔ)（可省略）。
    e.g. This is a plant which grows in the north .
    1、當(dāng)先行詞是all, everything, anything, nothing, much, little, none, one等不定代詞時(shí)，只用that。
    Pay attention to everything that I do.
    2、當(dāng)先行詞被序數(shù)詞或形容詞最高級(jí)修飾時(shí)，只用that。
    This is the best novel (that)I have read.
    3、如果出現(xiàn)兩個(gè)或兩個(gè)以上的先行詞，并同時(shí)兼指人和物時(shí)，關(guān)系代詞用that。 歌訣助記：兩項(xiàng)并列人與物，引導(dǎo)定從用that。
    They were talking about the person and things that they remembered in school.
    4、當(dāng)先行詞被the only, the last, the way, the same等修飾時(shí)。
    This is the last time that I shall give you a lesson.
    5、在疑問(wèn)詞which開(kāi)頭的特殊疑問(wèn)句中，為了避免重復(fù)只用that。
    Which of the students that knows something about history.
    6、當(dāng)被修飾的成分是數(shù)詞時(shí)，（被修飾成分是代名詞one，指人時(shí)除外）只用that. I’ve got one that you might be interested in.
    1、引導(dǎo)非限制性定語(yǔ)從句。
    Football, which is an interesting game, is played all over the world.
    全世界都踢足球，它是一項(xiàng)有趣的運(yùn)動(dòng)。
    2、直接放在介詞后作賓語(yǔ)時(shí)（介詞+關(guān)系代詞結(jié)構(gòu)中）。
    Language is the most important tool without which people can't communicate with each other.語(yǔ)言是最重要的工具，沒(méi)有它，人們便無(wú)法交流。
    （1）在定語(yǔ)從句中作狀語(yǔ)，先行詞主要為一些時(shí)間名詞（year ,day ,time,week等）,但時(shí)間名詞在從句中作主語(yǔ)，賓語(yǔ)時(shí)，應(yīng)用that，which，不能用when
    e.g. I’ll never forget the time when (during which ) we worked on the farm.作狀語(yǔ) I still remember the day that/which is his birthay.做主語(yǔ)
    He regretted the days that /which he spent on play . 做賓語(yǔ)
    （2）It is the first time that …句型中，that是習(xí)慣用法，不用when。
    e.g. It is the first time that I have been to the Great Wall .
    （1）指前面的地點(diǎn)，在從句中作狀語(yǔ)。
    e.g. I know the factory where I worked twenty years ago .
    （2）指地點(diǎn)，在句中作主語(yǔ)，賓語(yǔ)時(shí)不能用where，須用that/which .
    e.g. This is the house where he has lived for 20 years （作狀語(yǔ)）.
    This is the house that he has lived in for 20 years .（作賓語(yǔ)）
    e.g. This is the shool ｛in which /where we study every year.（作狀語(yǔ)）
    This is the shool that /which we visited yesterday. （作賓語(yǔ)） .
    “the reason why ….that…. ”中，不能用because 代替that .
    e.g. That’s the reason why (for which ) he didn’t come to school .
    The reason why he didn’t attend the meeting is that he was ill .
    但reason 在從句中做賓語(yǔ)時(shí)，關(guān)系代詞用that/which ,可省略
    e.g. I don’t believe the reason (which/that) he gave me .
    當(dāng)先行詞在定語(yǔ)從句中作介詞的賓語(yǔ)時(shí)，往往可以把介詞放在關(guān)系代詞之前，構(gòu)成“介詞+關(guān)系代詞（whom/which）”結(jié)構(gòu)。但一些短語(yǔ)如look after 等中的介詞不能與動(dòng)詞分開(kāi)，故不能放在關(guān)心代詞之前。確定介詞時(shí)：
    一是，依據(jù)定語(yǔ)從句中動(dòng)詞所需要的某種習(xí)慣搭配；
    二是，依據(jù)先行詞的某種習(xí)慣搭配；
    三是，根據(jù)所要表達(dá)的意思來(lái)確定。
    e.g. That’s the reason why (for which ) he didn’t come to school .
    關(guān)系代詞在非限定性定語(yǔ)從句中的用法。
    指人做主語(yǔ)用who,作賓語(yǔ)用whom ，指地點(diǎn)用where，指時(shí)間when，指物只用which，不能用that，作定語(yǔ)用whose。
    e.g. He didn’t see the film, which was very interesting .(不用that)
    such ….as： 像….一樣的，像…..之類(lèi)；the same…as： 和…..同樣的
    在這兩個(gè)句型中，as是關(guān)系代詞，such和same 作定語(yǔ)，修飾主語(yǔ)里的某個(gè)名詞（或代詞），這個(gè)名詞是由as引導(dǎo)的定語(yǔ)從句的先行詞，as在從句中可擔(dān)任主語(yǔ)、賓語(yǔ)或表語(yǔ)。
    Eg： We have found such materials as are used in their factory.( 在從句中作主語(yǔ)) I seldom give my students such a difficult problem as they cannot work out.（在從句中作賓語(yǔ)）
    The result is not the same as they had expected.( 在從句中作賓語(yǔ))
    重點(diǎn)比較 :
    the same …as…和 the same …that…
    兩者都引導(dǎo)定語(yǔ)從句。as 從句中說(shuō)明的名詞與the same 修飾的名詞是同一類(lèi)，而非同一個(gè)。that從句中說(shuō)明的名詞與the same 修飾的名詞是同一個(gè)。
    Eg：He is reading the same book that you bought yesterday.
    He is reading the same book as you bought yesterday.
    This is the same pen that I lost. =This is the pen that I lost.(指同一支筆)
    This is the same (kind/type/sort) of pen as I lost.（指同類(lèi)型的筆，但并不是我丟失的那一支）
    ….such as …中的such為代詞，意思是“這樣的人或物”，as 在從句中作賓語(yǔ)，修飾先行詞such。
    Eg： This book is not such as I expect.
    He told me of his experience such as I had never had before.
    相關(guān)鏈接：
    such as 還有“諸如，例如，像…那樣的”的意思，此時(shí)后面跟名詞或名詞短語(yǔ)等。
    Eg：They bought a lot of fruit, such as apples,oranges,etc.
    as 可以像which一樣引導(dǎo)非限制性定語(yǔ)從句，用來(lái)代表整個(gè)句子的內(nèi)容，它的先行詞可以是名詞，也可以是不定式短語(yǔ)或整個(gè)句子。as 在從句中作主語(yǔ)、賓語(yǔ)和表語(yǔ)。此外，有些as 引導(dǎo)的定語(yǔ)從句已成為固定用法，如：
    As we know As has been said before 如上所述 As is known to all As is often the case 像通常那樣 As is reported As was expected 正如預(yù)料的`那樣 Eg： She is very careful, as her work shows.
    As we know, smoking is harmful to one’s health.
    As is often the case, we have worked out the production plan.
    重點(diǎn)比較：as 和which 引導(dǎo)的非限制性定語(yǔ)從句的聯(lián)系和區(qū)別
    1、as 和which 都可以代替整個(gè)句子，當(dāng)定語(yǔ)從句置于主句之后時(shí)，as和which可以和互換。
    Eg：He didn’t tell me any news, as/which upset me.
    2、Which引導(dǎo)的從句，代表的前面的整個(gè)主句時(shí)，不能放在主句之前。而as 引導(dǎo)的定語(yǔ)從句，代表整個(gè)主句時(shí)，可以放在主句之前或之后，有時(shí)也可以放在主語(yǔ)和謂語(yǔ)之間。
    Eg：As is reported in the newspapers, talks between the two countries are making progress.
    = Talks between the two countries, as is reported in the newspapers, are making progress.
    As 引導(dǎo)的定語(yǔ)從句表示它的內(nèi)容與主句所講的內(nèi)容相似，即指同類(lèi)事物；that 引導(dǎo)定語(yǔ)從句表示的內(nèi)容與主句相同，即為同一事物。
    e.g. This is the same pen that I lost yesterday .這正是我昨天丟的鋼筆。
    This is the same pen as I lost yesterday .這正像我昨天丟的鋼筆。
    1、同位語(yǔ)從句和定語(yǔ)從句結(jié)構(gòu)相似，通常位于某一名詞或代詞之后，但兩者存在明顯區(qū)別：同為語(yǔ)從句對(duì)名詞性成分加以補(bǔ)充說(shuō)明，是該名詞性成分具體內(nèi)容的體現(xiàn)（相當(dāng)于名詞的作用）。That 引導(dǎo)的同位語(yǔ)從句中引導(dǎo)詞that不在該同位語(yǔ)從句中充當(dāng)成分，但不能被省略，同位語(yǔ)從句還可以用whether,how等連詞引導(dǎo)（定語(yǔ)從句則不能）。定語(yǔ)從句對(duì)先行詞加以限制或修飾，說(shuō)明先行詞的性質(zhì)或特征（相當(dāng)于一個(gè)形容詞的作用），定語(yǔ)從句的引導(dǎo)詞均在該定語(yǔ)從句中充當(dāng)成分（that在其引導(dǎo)的限定性定語(yǔ)從句中充當(dāng)主語(yǔ)，賓語(yǔ)或表語(yǔ)，充當(dāng)定語(yǔ)從句的賓語(yǔ)，that可以省略）注意體會(huì)一下三組例句。
    ① We can’t solve the problem how we can travel faster than light .我們解決不
    了如何才能超過(guò)光的速度這個(gè)問(wèn)題。
    ② I can’t remember the problem that they have.我記不得他們的問(wèn)題了。
    ① I won’t believe the fact that he lied to his mother.我不愿相信他對(duì)他母親撒
    ② I won’t believe the fact (that) he told me .我不愿相信他告訴我的事實(shí)。
    ① The news that Tom would go abroad is told by him. 湯姆將出國(guó)的消息是他
    講的。
    The news that he told me is that Tom would go abroad next year.他告訴我的消息是湯姆來(lái)年將出國(guó)。
    例題1.【全國(guó)卷I】The prize will go to the writer ________ story shows the most imagination.
    A. that B. which C. whose D. what
    【解析】C。句意為“獎(jiǎng)項(xiàng)將會(huì)頒發(fā)給故事展示了豐富想象力的作者。” 根據(jù)從句不缺成分和它與先行詞的關(guān)系可判斷前后為所屬關(guān)系，選whose作定語(yǔ)。
    例題2.〖10全國(guó)Ⅱ〗I refuse to accept the blame for something ________was someone else’s fault.
    【解析】B。從句缺主語(yǔ)，先行詞為物。
    例題3.【2011江蘇卷】Between the two parts of the concert is an interval, _______the audience can buy ice-cream.
    A. when B. where C. that D. which
    【解析】A。從句不缺任何成分，且先行詞為時(shí)間。
    例題4.〖08浙江〗Y(jié)esterday she sold her car, ______ she bought a month ago.
    A. when B. where C. that D. which
    【解析】D。從句缺賓語(yǔ)，且為非限制性定語(yǔ)從句。
    例題5. (陜西)______ is often the case with children, Amy was better by the time the doctor arrived.
    【解析】D。固定搭配“as is often the case”，像通常一樣。
    例題6. (浙江卷)Ellen was a painter of birds and of nature, _____, for some reason, had withdrawn from all human society.
    A. which B. who C. where D. whom
    1.The place _______interested me most was the Children's Palace.
    A. Which B. where C. what D. in which
    2.Do you know the man _______?
    A. whom I spoke B. to who spoke C. I spoke to D. that I spoke
    3.This is the hotel _______last month.
    A. which they stayed B. at that they stayed
    C. where they stayed at D. where they stayed
    4.Do you know the year ______the Chinese Communist Party was founded?
    A. which B. that C. when D. on which
    5.That is the day ______I'll never forget.
    A. which B. on which C. in which D. when
    6.The factory ______we'll visit next week is not far from here.
    A. where B. to which C. which D. in which
    7.Great changes have taken place in the factory ____we are working since then.
    A. where B. that C. which D. there
    8.This is one of the best films _______.
    A. that have been shown this year B. that have shown
    C. that has been shown this year D. that you talked
    9.Can you lend me the book ______the other day?
    A. about which you talked B. which you talked
    C. about that you talked D. that you talked
    10.The pen ______he is writing is mine.
    A.with which B.in which C.on which D.by which
    本節(jié)課的知識(shí)點(diǎn)相對(duì)比較多但難度系數(shù)不大，主要是講定語(yǔ)從句的各個(gè)關(guān)系詞具體用法。主要從九個(gè)方面進(jìn)行講解，詳細(xì)講解了定語(yǔ)從句中各個(gè)關(guān)系代詞、關(guān)系副詞的用法和區(qū)別。本部分的學(xué)習(xí)還是要求學(xué)生掌握關(guān)鍵詞，具體什么時(shí)候需要使用關(guān)系代詞或者關(guān)系副詞，什么叫做定語(yǔ)從句，希望學(xué)生能夠保持思路清晰，做題的時(shí)候十拿九穩(wěn)。
    1. Nearly all the streets are in straight lines, ________ from east to west. Those ________ run from north to south are called avenues.
    A. running; that B. run; who C. running; who D. run; that
    2. This is the case ________ he’s had all his money stolen.
    A. when B. where C. that D. on which
    3. Mr. Smith will pay a visit to Beijing this autumn, ________ we will enjoy the Olympic Games in .
    A. where B. when C. which D. how
    4. The artist will not paint people or animals but he will paint anything ________ .
    A. that the little girl asks him B. the little girl asks him to
    C. for the little girl to ask him D. what the little girl asks him
    5. —How did you get in touch with the travel agent, Robin?
    —Oh, that's easy. I surfed the Internet and then called one ________ the telephone number is provided.
    A. which B. in which C. of which D. whose
    6. October 15 th is my birthday, ________ I will never forget.
    A. when B. that C. what D. which
    7. The treatment will continue until the patient reaches the point ________ he can walk correctly and safely.
    A. when B. where C. which D. whose
    8. There are several research centers in China ________ a certain disease called Bird Flu is being studied.
    A. which B. where C. when D. what
    9. I hope that the little ________ I have been able to do does good to them all.
    A. which B. what C. that D. when
    10. The time is not far away ________ modern communications will become widespread in China's vast countryside.
    A. as B. when C. until D. before
    這節(jié)課總體感覺(jué)課堂進(jìn)程比較自然、順利，學(xué)生始終處在主動(dòng)參與和積極配合的狀態(tài)中，達(dá)到了預(yù)期設(shè)想，體現(xiàn)了“學(xué)中用，用中學(xué)”的任務(wù)型語(yǔ)言教學(xué)理念。定語(yǔ)從句是中學(xué)英語(yǔ)教學(xué)的一個(gè)重要語(yǔ)法項(xiàng)目。學(xué)生在學(xué)習(xí)這一語(yǔ)法時(shí)，雖然感到困難很大，但理清語(yǔ)法知識(shí)點(diǎn)之后也覺(jué)得定語(yǔ)從句語(yǔ)法知識(shí)結(jié)構(gòu)清晰并易于理解。希望學(xué)生課后能主動(dòng)鞏固并復(fù)習(xí)，同時(shí)加強(qiáng)單詞記憶。
    高中if從句教案【篇4】
    1. 如果主句是一般現(xiàn)在時(shí)、一般將來(lái)時(shí)或祈使句時(shí),賓語(yǔ)從句可根據(jù)情況使用各種時(shí)態(tài)。例如:
    I hear she is here today(she was here yesterday/ she will be here tomorrow.)
    2. 如果主句是一般過(guò)去時(shí),賓語(yǔ)從句應(yīng)使用過(guò)去時(shí)態(tài)的某種形式。例如:
    He said he was watching TV(he had swept the floor/ he would play football after school)。
    3. 如賓語(yǔ)從句所敘述的是客觀(guān)事實(shí)、自然現(xiàn)象或科學(xué)真理等,從句不受主句時(shí)態(tài)限制,仍用一般現(xiàn)在時(shí)。例如:
    Our teacher told us that light travels faster than sound.
    1. 當(dāng)賓語(yǔ)從句由陳述句變化而來(lái)時(shí),用that來(lái)引導(dǎo)從句,that常無(wú)具體意義,一般可省略。例如:
    Lin Tao thought(that)the TV play was very boring.
    2. 當(dāng)賓語(yǔ)從句是由一般疑問(wèn)句變化而來(lái)時(shí),要用if或whether來(lái)引導(dǎo)從句。例如:
    David asked his mother if/ whether she liked the dinner last night.
    3. 當(dāng)賓語(yǔ)從句是由特殊疑問(wèn)句變化而來(lái)時(shí),原句中的疑問(wèn)詞充當(dāng)連接代詞(如who, whose, what, which)或連接副詞(如when, where, why, how),引導(dǎo)賓語(yǔ)從句。例如:
    Do you know what we can do on the island?
    I don’t know why Jane was late for school this morning.
    賓語(yǔ)從句一般要用陳述句語(yǔ)序。例如:
    When did he leave? I want to know. →I want to know when he left.
    Does the shop close at six every day? Do you know? →Do you know if/ whether the shop closes at six every day?
    當(dāng)主句的謂語(yǔ)動(dòng)詞為think, believe, suppose等動(dòng)詞,且主語(yǔ)為第一人稱(chēng)時(shí),從句的否定要轉(zhuǎn)移到主句上。例如:
    I don’t believe he is here on time, is he?
    I don’t think Tom is the best student in his class, is he?
    高中if從句教案【篇5】
    賓語(yǔ)從句可以作及物動(dòng)詞、介詞及形容詞的賓語(yǔ)。
    賓語(yǔ)從句的語(yǔ)序一律用陳述句語(yǔ)序。
    連接詞that引導(dǎo)賓語(yǔ)從句在句中無(wú)詞義，不充當(dāng)句子成分，多數(shù)情況下可以省略。
    whether 和 if 都可引導(dǎo)賓語(yǔ)從句，但 whether后可緊跟or not；whether從句可作介詞的賓語(yǔ)。
    如果從句太長(zhǎng)，可以用形式賓語(yǔ)it. 補(bǔ)充賓語(yǔ)從句在句子中起賓語(yǔ)作用的從句叫做賓語(yǔ)從句.賓語(yǔ)從句分為三類(lèi):
    （1）動(dòng)詞的賓語(yǔ)從句,介詞的賓語(yǔ)從句和形容詞的賓語(yǔ)從句.時(shí)態(tài)：1·主句用一般現(xiàn)在時(shí)，從句可用任意時(shí)。 2·主句用過(guò)去時(shí)，從句用過(guò)去某個(gè)時(shí)態(tài)。 3·主句用過(guò)去時(shí)，從句是真理時(shí)，只用一般現(xiàn)在時(shí)。
    （2）賓語(yǔ)從句的從屬連詞主要有that,if,whether.that引導(dǎo)表示陳述句的賓語(yǔ)從句,而if和whether引導(dǎo)表示“是否”的賓語(yǔ)從句.
    He told that he would go to the college the next year他告訴我他下一年上大學(xué).
    I don’t know if there will be a bus any more.我不知道是否還會(huì)有公交車(chē).
    Nobody knew whether he could pass the exam.沒(méi)人知道他是否會(huì)通過(guò)考試.
    連接代詞連接代詞主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等.連接代詞一般指疑問(wèn),但what, whatever除了指疑問(wèn)外,也可以指陳述.
    Do you know who has won this game?你知道誰(shuí)贏了這一局游戲嗎?
    I don’t know whom you should depend on.我不知道你該依靠誰(shuí).
    The book will show you what the best CEOs know.這本書(shū)會(huì)告訴你最好的執(zhí)行總裁該了解些什么.
    Have you determined whichever you should buy,a Motorola or Nokia cell phone?你決定好是買(mǎi)諾基亞還是摩托羅拉的電話(huà)了嗎?
    連接副詞連接副詞主要有when,where,why,how,whenever,wherever,however等.
    He didn’t tell me when we should meet again.他沒(méi)有告訴我什么時(shí)候我們能再見(jiàn)面.
    Could you please tell me how you read the new panel?你能展示給我怎么用這個(gè)新的操作盤(pán)嗎?
    None of us knows where these new parts can be bought.沒(méi)有人知道這些的新的零件能在哪里買(mǎi)到.
    We all expect that they will win , for members of their team are stronger.我們都預(yù)料他們會(huì)贏,因?yàn)樗麄兊年?duì)員更強(qiáng)壯.
    He told us that they would help us though the whole work.他告訴我們?cè)谡麄€(gè)工作中,他都會(huì)幫忙的.
    I have found out that all the tickets for the concert have been sold out.我發(fā)現(xiàn)這場(chǎng)音樂(lè)會(huì)的所有票都賣(mài)光了.
    Can you work out how much we will spend during the trip?你能計(jì)算出這次旅行我們將花費(fèi)多少錢(qián)嗎?
    動(dòng)詞短語(yǔ)也可以帶賓語(yǔ)從句常見(jiàn)的這些詞有:make sure確保 make up one’s mind下決心 keep in mind牢記
    Make sure that there are no mistakes in your papers before you turn them in.在上交試卷前確保沒(méi)有任何錯(cuò)誤.
    ①動(dòng)詞find,feel,consider,make,believe等后面有賓語(yǔ)補(bǔ)足語(yǔ)的時(shí)候,則需要用it做形式賓語(yǔ)而將that賓語(yǔ)從句后置.
    I think it necessary that we take plenty of hot water every day .我認(rèn)為每天多喝開(kāi)水是有必要的.
    I feel it a pity that I haven’t been to the get-together.我沒(méi)去聚會(huì),感覺(jué)非常遺憾.
    I have made it a rule that I keep diaries. 我每天寫(xiě)日記成了習(xí)慣.
    We all find it important that we (should) make a quick decision about this mater. 我們都認(rèn)為對(duì)這件事馬上做出決定很重要.
    ②有些動(dòng)詞帶賓語(yǔ)從句時(shí)尋要在賓語(yǔ)與從句前加it這類(lèi)動(dòng)詞主要有:hate, take , owe, have, see to.
    I hate it when they talk with their mouths full of food.我討厭他們滿(mǎn)嘴食物時(shí)說(shuō)話(huà).
    He will have it that our plan is really practical.他會(huì)認(rèn)為我們的計(jì)劃確實(shí)可行.
    We take it that you will agree with us.我們認(rèn)為你會(huì)同意我們的.
    When you start the engine, you must see to it that car is in neutral.開(kāi)啟發(fā)動(dòng)機(jī)時(shí), 一定要使汽車(chē)的離合器處于空擋位置.
    We all consider what you said to be unbelievable.我們都認(rèn)為你所說(shuō)的是不可信的.
    We discovered what we had learned to be valuable.我們發(fā)現(xiàn)我們所學(xué)到的東西都是有用的.
    We are talking about whether we admit students into our club.我們正在討論是否讓學(xué)生加入我們的俱樂(lè)部.
    The new book is about how Shenzhou 6 manned spaceship was sent up into space.這本新書(shū)是關(guān)于神州6號(hào)載人航天飛船是如何升如太空的.
    用that,if引導(dǎo)的介詞賓語(yǔ)從句有時(shí)候except,but,besides三個(gè)介詞后可見(jiàn)到that引導(dǎo)的賓語(yǔ)從句
    I know nothing about my new neighbor except that he used to work with a company.對(duì)于我的新鄰居我只知道他曾在一家公司上班,其他一無(wú)所知.
    4.形容詞的賓語(yǔ)從句常用來(lái)引導(dǎo)賓語(yǔ)從句的形容詞有: sure,certain,glad,please,happy,sorry,afraid,satisfied,surprisedI am sure
    I will pass the exam.我確信我會(huì)通過(guò)考試.
    I am sorry that I have troubled you so long.很抱歉我這么長(zhǎng)時(shí)間在打擾你.
    He is glad that Li Ming went to see him when he was ill.他很高興在他生病的時(shí)候李明能去看望他.
    ①if和whether在作“是否”解時(shí),引導(dǎo)賓語(yǔ)從句常放在動(dòng)詞know,ask,care,wonder,find out等之后,介詞后一般不用if
    ②少數(shù)動(dòng)詞,如:leave,put,discuss,doubt后的賓語(yǔ)從句常用whether.
    ③whether后可以加or not,但是if不可以.
    ④在不定式前只能用whether.如： I can’t decide whether to stay. 我不能決定是否留下。
    ⑤避免歧異時(shí),我們常用whether而不用if.
    6.哪些賓語(yǔ)從句不可以省略引導(dǎo)詞that當(dāng)that作learn,suggest,explain,agree,wonder,prove,mean,state,feel,hold等動(dòng)詞的賓語(yǔ)時(shí);當(dāng)賓語(yǔ)從句較長(zhǎng)時(shí);當(dāng)主語(yǔ)狀語(yǔ)置于主句尾,賓語(yǔ)從句之前時(shí);當(dāng)主語(yǔ)謂語(yǔ)動(dòng)詞(包括非謂語(yǔ)動(dòng)詞)與賓語(yǔ)從句之間有插入語(yǔ)時(shí);當(dāng)一個(gè)動(dòng)詞帶有兩個(gè)或兩個(gè)以上賓語(yǔ)從句時(shí),此時(shí)第一個(gè)that可以省略,第二個(gè)that不可以省略;當(dāng)賓語(yǔ)從句中的'主語(yǔ)是this,that或this,that做主語(yǔ)的定語(yǔ)時(shí);當(dāng)賓語(yǔ)從句是雙賓語(yǔ)中的直接賓語(yǔ)時(shí);當(dāng)賓語(yǔ)從句的主語(yǔ)是非謂語(yǔ)動(dòng)詞或主語(yǔ)從句時(shí);當(dāng)主語(yǔ)中的謂語(yǔ)動(dòng)詞是固定詞組時(shí);當(dāng)賓語(yǔ)從句有it做其先行詞時(shí);在直接引語(yǔ)中,轉(zhuǎn)述分句把賓語(yǔ)從句隔開(kāi)時(shí)
    賓語(yǔ)從句的否定轉(zhuǎn)移主句的謂語(yǔ)動(dòng)詞是think,believe,imagine,suppose,consider,espect,fancy,guess等,并且主句的主語(yǔ)是第一人稱(chēng)而且為一般現(xiàn)在時(shí),從句的否定詞一般要轉(zhuǎn)移到主句上來(lái),其反義疑問(wèn)句一般與賓語(yǔ)從句一致.
    I don’t think he will come to my party.而不能說(shuō)成I think he won’t come to my party.我認(rèn)為他不會(huì)來(lái)我的舞會(huì).
    I don’t believe that man is killed by Jim,is he?我認(rèn)為那個(gè)人不是Jim所殺的,是不是?如果賓語(yǔ)從句中有某個(gè)含有否定意義的形容詞或副詞,其反義疑問(wèn)句要用肯定形式.
    We find that he never listens to the teacher carefully,does he?我們發(fā)現(xiàn)他從來(lái)不仔細(xì)聽(tīng)老師講課,是不是?
    賓語(yǔ)從句的時(shí)態(tài)和語(yǔ)序當(dāng)主句為現(xiàn)在時(shí)或?qū)?lái)時(shí)的時(shí)候,賓語(yǔ)從句的時(shí)態(tài)一般不受主句的時(shí)態(tài)所影響.當(dāng)主句為過(guò)去時(shí)的時(shí)候
    I only knew he was studying in a western country,but I didn’t know what country he was in.我只知道他當(dāng)時(shí)在西方的一個(gè)國(guó)家讀書(shū),可不知道是哪個(gè)國(guó)家.
    He asked me if I was reading the story The Old Man and the Sea when he was in.他問(wèn)我他進(jìn)來(lái)的時(shí)候我是否正在讀.
    He told me that he had told Mary about the meeting already.他告訴我他已經(jīng)把有關(guān)會(huì)議的事情告訴的了Mary.
    The reporter asked if the government would take necessary measures to put down the to-do.記者問(wèn)政府是否會(huì)采取必要的措施鎮(zhèn)壓騷亂.
    The teacher said that the moon goes around the earth yesterday.老師昨天說(shuō)月亮繞著地球轉(zhuǎn).
    當(dāng)賓語(yǔ)從句的引導(dǎo)詞是who,which,what,when,where,how,why等表疑問(wèn)時(shí),不能按正常語(yǔ)序安排,經(jīng)常將這類(lèi)引導(dǎo)詞置于句首
    Who do you think the public might choose as their favorite singer this year?你認(rèn)為今年公眾會(huì)選誰(shuí)為他們最喜歡的歌手
    賓語(yǔ)從句，即：在主句中擔(dān)當(dāng)賓語(yǔ)的從句。學(xué)習(xí)賓語(yǔ)從句要抓住三要素：連接詞、語(yǔ)序和時(shí)態(tài)。 連接詞一般都是that(指事務(wù)或人),which（指事）,who（指人）
    1．從句為陳述句，常選擇連接詞that或?qū)hat省略，直接與主句相連。
    2．從句為一般疑問(wèn)句，常選擇連接詞if或whether。在whether…ornot結(jié)構(gòu)中不能用if替換。
    3．從句為特殊疑問(wèn)句，常選擇what,when,where,which,who,how等的疑問(wèn)代、副詞作連接詞。
    2。主句是一般過(guò)去時(shí)，從句為各種相應(yīng)過(guò)去時(shí)態(tài)注意：從句描繪客觀(guān)事實(shí)，用一般現(xiàn)在時(shí)
    1. The teacher told the children that the sun____ round. 【A. was B. is C. were D. are】
    2. I believe that our team____ the basketball match.【 A. win B. won C. will win D. wins 】
    3. I don’t know____ to visit the old man. 【A. whether B. if C. that D. who】 The soldiers soon reached( )was once an old temple( )the villagers used as a school. 【A.which;where B.what;which C.where;which D.what;where】
    答：選B，動(dòng)詞reach后接賓語(yǔ)從句，從句缺少賓語(yǔ)，where不可，which引導(dǎo)賓語(yǔ)從句時(shí)表疑問(wèn)含義“哪一個(gè)…”而此句中并非疑問(wèn)含義，不知道哪一座廟宇，而是用what從句表陳述含義，意“過(guò)去的一座舊廟宇”；temple后為對(duì)其修飾的定語(yǔ)從句，用關(guān)系代詞which代替，并在從句中作動(dòng)詞used的賓語(yǔ)，use sth. as…“把…用作…whether + or not 賓語(yǔ)從句，在復(fù)合句中作賓語(yǔ)，位于及物動(dòng)詞后；
    eg． Tell him which class you are in ． Do you know what he likes？
    注：(1)主、從句時(shí)態(tài)一致： 主句謂語(yǔ)過(guò)去時(shí)，從句相應(yīng)過(guò)去時(shí)； He answered that he was listening to me. 主句謂語(yǔ)現(xiàn)在時(shí)，從句時(shí)態(tài)任所需；
    eg． He says (that) he will leave a message on my desk. They know (that) he is working hard. 具體過(guò)去永不變，真理格言現(xiàn)在時(shí)；
    eg． He told me that he was born in 1980. Father told me that practice makes perfect .
    （2）否定前移，及完成反意問(wèn)句； 在think / believe / suppose / guess / imagine / expect等動(dòng)詞后跟賓語(yǔ)從句否定式時(shí)，應(yīng)轉(zhuǎn)移到主句上去，完成反意問(wèn)句時(shí)，應(yīng)與從句主、謂保持一致。（注: 否定前移的條件是，主句主語(yǔ)是第一人稱(chēng)）
    eg． I don't think you are right ,are you ? I don't believe they have finished their work yet,have they ?
    （3）在表示建議 suggest , advise 要求demand 、desire、require、request、propose； 決定 decide; 命令 order、command; 堅(jiān)決主張 insist; 等動(dòng)詞后跟賓語(yǔ)從句，用（should）+v．（虛擬語(yǔ)氣）
    eg． I suggested that you（should）study hard． He ordered that we should go out at once．
    （4）如果賓語(yǔ)從句后有賓語(yǔ)補(bǔ)語(yǔ)，用it作形式賓語(yǔ)，把賓語(yǔ)從句后置
    eg．You may think it strange that he would live there．
    A．當(dāng)主句謂語(yǔ)動(dòng)詞帶有兩個(gè)或兩個(gè)以上賓語(yǔ)從句時(shí)，可以省略第一個(gè)that，其他不能省略。
    eg．I believe（that）you have done your best and that things will get bet?．
    eg．She made it clear that she had nothing to do with him．
    eg．That our team will win，I believe．
    高中if從句教案【篇6】
    主語(yǔ)狀語(yǔ)置于主句尾，賓語(yǔ)從句之前。
    主語(yǔ)謂語(yǔ)動(dòng)詞（包括非謂語(yǔ)動(dòng)詞）與賓語(yǔ)從句之間有插入語(yǔ)。
    一個(gè)動(dòng)詞帶有兩個(gè)或兩個(gè)以上賓語(yǔ)從句時(shí)，第一個(gè)that可以省略，第二個(gè)that不可以省略。
    賓語(yǔ)從句中的主語(yǔ)是this,that或those,these做主語(yǔ)的定語(yǔ)。
    賓語(yǔ)從句是雙賓語(yǔ)中的直接賓語(yǔ)。
    賓語(yǔ)從句的主語(yǔ)是非謂語(yǔ)動(dòng)詞或主語(yǔ)從句。
    主語(yǔ)中的謂語(yǔ)動(dòng)詞是固定詞組。
    賓語(yǔ)從句有it做其先行詞。
    直接引語(yǔ)中，轉(zhuǎn)述分句把賓語(yǔ)從句隔開(kāi)。
    主句的謂語(yǔ)動(dòng)詞是think,believe,imagine,suppose,consider,expect,fancy,guess等，并且主句的主語(yǔ)是第一人稱(chēng)而且為一般現(xiàn)在時(shí)，從句的否定詞一般要轉(zhuǎn)移到主句上來(lái)，其反義疑問(wèn)句一般與賓語(yǔ)從句一致.
    如果賓語(yǔ)從句中有某個(gè)含有否定意義的形容詞或副詞，其反義疑問(wèn)句要用肯定形式.我們通常稱(chēng)為否定前移。
    當(dāng)主句為現(xiàn)在時(shí)或?qū)?lái)時(shí),賓語(yǔ)從句的時(shí)態(tài)一般不受主句的時(shí)態(tài)所影響.
    ⑤當(dāng)賓語(yǔ)從句的引導(dǎo)詞是who,which,what,when,where,how,why等表疑問(wèn)時(shí)，不能按正常語(yǔ)序安排，經(jīng)常將這類(lèi)引導(dǎo)詞置于句首
    無(wú)論任何時(shí)候都為陳述語(yǔ)序.但也有部分口語(yǔ)提問(wèn)例外 E.G:What's the matter?What's wrong with you?
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