1、不定冠詞a， an
    a用在輔音音素開頭的詞前 eg. a book， a useful book
    an用于元音開頭的詞前。 eg. an apple， an hour
    2、定冠詞the
    1)特指某人/某物
    The book on the desk is mine.
    2)世上獨(dú)一無二的事物前
    the sun ， the moon， the earth， the sky
    3)形、副最高級(jí)及序數(shù)詞前
    The third boy is the tallest of all.
    注意：
    He is my first English teacher.
    4)the + 姓的復(fù)數(shù)表示 “某家人”或“某夫婦”。
    the Greens 格林一家/ 格林夫婦
    3、不用冠詞的幾種情況：
    1)在星期、月份、季節(jié)前不用冠詞
    2)學(xué)科名詞前
    3)球類運(yùn)動(dòng)及早、中、晚三餐名詞前(但：①當(dāng)三餐名詞前有修飾詞時(shí)，則要加適當(dāng)?shù)墓谠~。 ②表樂曲演奏的名詞前應(yīng)加the)
    1) He went to school after he had a quick breakfast.
    2) play the violin / piano
    在有些詞組中，用冠詞和不用冠詞意思有較大區(qū)別。
    in hospital(在住院);in the hospital(在醫(yī)院)
    in prison( );in the prison( )
    at table(吃飯，用餐);at the table(在桌旁)
    in front of(在某個(gè)范圍之外的前面);in the front of(在某個(gè)范圍之外的前面)
    go to college(上大學(xué));go to the college(去那所大學(xué))
    take place(發(fā)生);take the place(代替)
    練 習(xí)
    ( )1.There is ____ “s” in ____ word “bus”。
    A. a ; a B. an ; the C. a ; the D. an ; a
    ( )2.Maths is ___ useful subject. You can’t drop it ， I think.
    A. an B. a C. the D. /
    ( )3.____ bad weather it is!
    A. How B. What a C. How a D. What
    ( )4.—What color is ___ orange?
    --It’s _____ orange.
    A. an; an B. an ; the C. an ; / D. / ; an
    ( )5.Mr. Li is ____ old worker.
    A. an B. a C. some D. /
    ( )6.Look at ____ picture! There’s ____ house in it.
    A. a ; a B. the ; the C. a ; the D. the; a
    ( )7.One morning he found ____ handbag. There was ___ “s” on the corner of ___ handbag.
    A. a ; an ; the B. a ; a ; the
    C. a ; a ; a D. the ; an ; a
    ( )8.What ___ interesting story it is!
    A. a B. an C. the D. /
    ( )9.Meimei is ___ best student in her class.
    A. a B. an C. / D. the
    ( )10.Tom is ___ kind boy. All ___ students love him.
    A. a ; / B. a ; the C. an ; / D. an ; the
    ( )11.Is ___ book on the desk mine? Yes.
    A. the B. a C. an D. /
    ( )12.Even while he was in ___ hospital， he went on writing songs.
    A. a B. an C. the D. /
    ( )13.Don’t read _____.
    A. in bed B. in the bed C. on bed D. on the bed
    ( )14.Smith is ____ honest man.
    A. a B. the C. an D. /
    ( )15.China has ___ population of 1，200，000，000.
    A. / B. an C. the D. a
    ?
    

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