英语助动词do的用法ppt课件.ppt

UNIT 2,2013年9月21日,1,2,英语语法Grammar助动词和动词Do的用法,Do的三种形式原形一般现在时第三人称单数过去式（这里只需对此有基本了解即可）,do的基本用法,3,- 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,4,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,5,For example(e.g.) I like swimming.否定句？一般疑问句及回答？特殊疑问句呢？,6,9,助动词do与does与人称代词搭配一致口诀（一）变句型，先观察主语为一、二、（三复），陈述句中动用原。一般疑问do句首，否定dont实动前。注：一、二、（三复）指的是第一、第二人称单复数，第三人称复数。动用原指动词用原形，实动指实义动词。,For exampleI am from China.否定句？一般疑问句及回答？特殊疑问句呢？,10,否定句：I am not from China. 一般疑问句及回答:Are you from China? Yes, I am./ No, Im not. 特殊疑问句: Where are you from?,The answer,11,12,助动词do与does与人称代词搭配一致口诀（二）若是主语为三单，陈述句中动变形。一般疑问也简单，does放在句子前。否定doesnt实动前，主动出现动还原。注：一、二、（三复）指的是第一、第二人称单复数，第三人称复数。动用原指动词用原形，实动指实义动词。,For exampleShe likes that red car.否定句？一般疑问句及回答？特殊疑问句呢？,13,否定句： She doesnt like that red car. 一般疑问句及回答: Does she like that red car? Yes, she does./ No, she doesnt. 特殊疑问句: Which car does she like?,The answer,14,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。,15,Do do do, do we do, Do do do, do you do, Do do do, do they do,Does does does, does he does, Does does does, does she does,Lets lets lets, lets lets sing. do是助动词，does它也是。Lets lets lets, lets remember. 3单 用 does， 数 多 要 用 do。,Chant,16,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？,17,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.否定回答：No, I dont否定句：I dont do my homework.,18,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?,19,1. 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,20,5. 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,21,Class is over,22,THANK YOU !,23,