《初三版 Do 的四作用》由留學(xué)liuxue86.com編輯整理。本內(nèi)容整理時(shí)間為05月12日，如有任何問(wèn)題請(qǐng)聯(lián)系我們。
    動(dòng)詞do在句中的作用可以概述為四句十二字："做"實(shí)義，助動(dòng)詞，替前文，強(qiáng)語(yǔ)氣。
    作用一：實(shí)義do
    do作實(shí)義動(dòng)詞時(shí)，有do, does, did, done, doing五種形式，還有及物、不及物之分。如：
    1. vt. "做；研究；整理；完成"。如：
    ①The old man does an hour of sport every day.
    ②She did her homework at home last night.
    ③Mother was doing the cooking when I reached home.
    ④Have you done the exercises yet?
    2. vi. "行動(dòng)；工作；進(jìn)展；足夠"。如：
    ①Kate does very well in her Chinese.
    ②How do you do?
    ③Well done!
    ④That will do.
    作用二：助動(dòng)do
    do作助動(dòng)詞時(shí)，只有do, does, did三種形式，無(wú)詞義，限用于含行為動(dòng)詞的一般現(xiàn)在時(shí)和一般過(guò)去時(shí)兩種時(shí)態(tài)的否定句和疑問(wèn)句中。如：
    ①They don't have any tickets for tonight's concert.
    ②Kate stayed at home last night, didn't she?
    ③How many books does the library have?
    ④She doesn't do the washing in the evening.
    作用三：替代do
    為避免動(dòng)詞的重復(fù)，使語(yǔ)言簡(jiǎn)練，常以do, does, did替代前文所用的行為動(dòng)詞。如：
    ①Tom runs much faster than you do.
    ②-Lucy, can you get some more tea, please?
    -Sure. I'll do it right away.
    ②-Who broke the cup?
    -Mimi did.
    ③-I like bananas.
    -So does he.
    作用四：語(yǔ)氣do
    為突出感情色彩，do常用于祈使句、強(qiáng)調(diào)句和倒裝句中，以加強(qiáng)語(yǔ)氣。如：
    ①Do be careful.
    ②Don't tell a lie.
    ③He did come.
    ④-You often go to the park.
    -So we do.
    《初三版 Do 的四作用》由留學(xué)liuxue86.com編輯整理