《现在完成时复习》PPT课件.pptVIP

The Present Perfect Tense(Revision) 请同学们回忆自己曾经做过的动作： For example: 1. I did my homework last night. 2. I bought a book last Sunday. 试一试： 1.A: Do you want a pen ? B: No, I don’t . I _____ already _____ (buy) one . 2. _____ you ever ______(be) to Paris? 3.A:Where is your mother ? B: She ________ (go) shopping today. 4. I _____________ ( not finish) the homework yet. 5.Li Lei _____ just _____ (give) the cakes to Polly.. 6. There ________(be) great changes in Rugao these years. 7.My father ________ (go) to Beijing . He isn’t at home . 8 I _____never______ (be) to London ? 用法(一): 1.表示过去发生的某一动作对现在造成的影响或结果,常与一些时间状语,如:already, yet, ever, never, just, before, once, twice等连用，也可以和包括现在在内的时间状语，如these days, today, this year, so far等连用。 英语中行为动词根据词义可分为两种，一种是延续性的，如teach, study, learn, live等。一种是非延续性的，如open, close, die, buy, leave, come等，表示动作的发生与结束于一瞬间完成，不能再延续，所以它的现在完成时不能和表示延续的时间状语连用，即不能与表示一段时间的状语，for+时间段, since+时间点/从句连用，也不能用在how long引导的特殊疑问句中。 常见瞬间动词巧记： 请你来找茬儿： 1.The film has begun for five minutes. 2.His mother has died since two years ago. 3.I have bought the computer for a long time. 4.Helen has joined the Youth League since 2000. 5.How long have you fallen ill? 用法2、 表示过去发生的动作或存在的状态，一直持续到现在，也许还将继续下去，可以和表示从过去某一时刻延续到现在的一段时间的状语连用，标志性时间短语for +时间段，since+时间点/从句，in the last ten years等，谓语只可用延续性动词。 He ____________(work) in our school for one year. He ______(come) to our school last year/in 2002. They _______________(cook) the supper already. They ___________ (cook) the supper half an hour ago. have/has gone to…  have/has been in … have/has been to… 1.A: Where’s Jim, Li Lei? B: He ____________ the school library. 2.The Greens _____________China for three years. We _____________the Great Wall twice. It’s very beautiful. Make a dialogue A: Hi dear, I’m home. B: Hi, Mum. ________________ A:_______________________. I have bought many beautiful flowers. ______________________? B: ______________________. A: Good, and? B: _________________