這篇關(guān)于小學(xué)英語單詞：Do的四作用，是特地為大家整理的，希望對大家有所幫助！
    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?