初中英語語法:初三版 Do 的四作用

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    動詞do在句中的作用可以概述為四句十二字："做"實義，助動詞，替前文，強語氣。
    作用一：實義do
    do作實義動詞時，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；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do
    do作助動詞時，只有do, does, did三種形式，無詞義，限用于含行為動詞的一般現(xiàn)在時和一般過去時兩種時態(tài)的否定句和疑問句中。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
    為避免動詞的重復(fù)，使語言簡練，常以do, does, did替代前文所用的行為動詞。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：語氣do
    為突出感情色彩，do常用于祈使句、強調(diào)句和倒裝句中，以加強語氣。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