八年级下现在完成时的用法及练习.docx

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1、一现在完成时1. 过去某一时间点发生的动作对现在产生影响。2. 过去某一时间点发生的动作持续到现在或还将持续下去。二基本结构have / has + done助动词(可以帮助构成肯定、疑问和否定句)l.He has cleaned his room.(写一个一般疑问句)3. She has lived in London for four years.(划线部分提问)4. He has been to China,?(写出反义疑问句部分)5. They have come back from work.(写否定句)三 Key words1 .注意：already用于肯定句，yet用于疑问句和否

2、定句中A:your brotherhis homework yet? (finish)B: Yes, hes already done it.2 .注意：ever曾经 用于疑问句中never从不 带有否定意义A: you everto the park? ( be )B: No, never.3. Just刚刚与现在完成时连用一般置句中Just now 刚才与一般过去时 连用I just the desk, you can take it to your classroom . (mend )3 .since后面带过去时间或有一般过去时的句子Tom in the factory since h

3、e left school ten years ago. (work )6. for+ 一段时间A: How long you in this school? (teach )B: For 6 years.6.so far We only 100 trees so far. (answer )7.in the past 10 years how long twice也可以是其他表示次数的词He has bought the book. He has bought the book for a week.He has had the book for a week. She has bought

4、 the computer for two years.How long have you come to the United States Ann has gone to China since three months ago.例句 l.My brother has joined the army for five years.2.1 have left Shanghai for 3 days.1.1 have borrowed the dictionary since 3 days ago.4 .The film has begun for 10 minutes5 .The conce

5、rt has finished for half an hour6 .His dog has died for two years.四短暂性动词转换成延续性动词leavehave/has been awayborrow have/has keptbegin havc/has been on finishhave/has been overdie have/has been deadBuy-have/has had come to-have/has been in go tohave/has been ingot tohave/has been injoinhave/has been inhav

6、e/has been a soldier五have gone to去了某还没回来不与只用于第三人称have been to去过某地己经回来常与ever, never,once,twice,连用 have been in 一直留在某地与for / since连用用how long提问 l,o Her sister Australia, She left this morning.2 .A: Where is Bob ? B: He Jiipan with his sister.3 .A: How long you China? B: 1 here for 3 years.4 .A: you ev

7、er the city ? B: No , never .六用所给动词的适当形式填空1.1 already(see) the film. I(see) it last week.2 .he(finish) his work today ? Not yet.3 .you(be) to Hong Kong ? Yes, I(be) there twice .4 . He just(finish) his homework.5 .the young woman ever(travel) to England?6 .each of you(read) Gone with the wind yet?7

8、.Have you(get) any new CDs?8.My family have never(be) to Sanya.9 .They ever(eat) fish and chips.10.1 just(lose) my science book. 11.Has Tom(finish) his work12.1 have already(read) this book. 13.She hasnt(return) her book yet.14.you ever(cat) chocolate sundaes ? No, never.15.My father just(come) back

9、 from work. He is tired now.16.Wheres Li Ming ? He(go) to the teachers office.17.Shanghai(be) a small town hundreds of years ago.Now it(become) a large city. 18.1(work) here since I(move) here in 1999.9.So far I(make) quite a few friends here.20.How long the Wangs(stay) here ? For two weeks.21.I just(finish) my homework.22.you(find) your science book yet?