英语助动词do的用法.ppt

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1、Do的三种形式原形(do)一般现在时第三人称单数(does)过去式(did)（这里只需对此有基本了解即可）,do的基本用法,1,-构成否定句-构成一般疑问句及回答-构成特殊疑问句,1.Do的基本用法,2,肯定式：do否定式：do not缩略否定式：dont,用法：do用在第一人称单复数、第二人称单复数和第三人 称复数做主语，且时态为一般现在时的句子中。,Do的原形,3,For example(e.g.)I like swimming.否定句？一般疑问句及回答？特殊疑问句呢？,4,否定句：I dont like swimming.一般疑问句及回答:Do you like swimming?Yes

2、,I do./No,I dont.特殊疑问句：What do you like?I like swimming.,The answer,5,肯定式：does否定式：does not缩略否定式：doesnt,2.现在时第三人称单数,用法：does用在第三人称单数做主语，且时态为一 般现在时的句子中。注意：当does出现时，句子中用动词原形。,6,For exampleShe likes that red car.否定句？一般疑问句及回答？特殊疑问句呢？,7,否定句：She doesnt like that red car.一般疑问句及回答:Does she like that red car?Y

3、es,she does./No,she doesnt.特殊疑问句:Which car does she like?,The answer,8,肯定式：did否定式：did not缩略否定式：didnt,3.Do的过去式（基本了解即可）,用法：did用在时态为一般过去时的句子中,用于 所有人称。注意：当did出现时，句子中用动词原形。,9,Do 是助动词吗？e.g.I do my homework.一般疑问句?肯定回答？否定回答？否定句？,10,Do 是助动词吗？e.g.1:I do my homework.一般疑问句：Do you do your homework?肯定回答：Yes,I do.

4、否定回答：No,I dont否定句：I dont do my homework.,11,Do 是助动词吗？e.g.2:What does your mother do?(特殊疑问句）回答：My mother is a teacher.,Does和do是什么?,12,1.What color()you like best?A.do B.does C.are 2.she like cat?A.do B.does C.is3.Does she()apples or pears?A.likes B.like C.liked4.Do you like red?().A.Yes,I dont.B.Yes,I do.C.No,I do.D.No,I doesnt.ANSWERS:,EXERCISES,13,5.Do you go to school by bus?肯定回答：()否定回答：(),6.He likes his father very much.一般疑问句：？肯定回答：()否定回答：()否定句：？,EXERCISES,14,