现在完成时与过去时.ppt

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1、概念概念: 一般过去时表示在过去某个时间发生的动词或存在的状态，也表示过去经常或反复发生的动作。e.g. He came here yesterday. 现在完成时表示过去的动作（或状态）对现在产生的影响和结果e.g. He has broken his bottle.一般过去时和现在完成时的区别：1）构成不同Tom went to London last year.Lily has been to London twice.一般过去时的谓语动词用过去式过去式，现在完成时的谓语用“助动词have /has +过去分词” 一般过去时和现在完成时的区别： yesterday, once, last

2、 week, . ago, in 1980, in October, just now等具体的时间状语具体的时间状语。 for, since, so far, ever, never, just, yet, already等不确定的时间状语不确定的时间状语。 一般过去时常与具体的时间状语连用，现在完成时常与模糊的时间状语连用，或无时间状语。1.He _ (wait) for an hour.2.I _(not finish) the work yet.3. _ you _ (know) him since then?4.I _ (not hear) from my brother for a

3、long time.5.We _ (be) there many times since 3 years ago. Fill in the blanks with the correct forms of the verbs.has waitedhavent finishedHave knownhavent heardhave been练习1. -I have seen the film Titanic already. -When _ you _ it? A. have, seen B. will see C. did, see D. did, seen2. Mr. Black _ in C

4、hina since five years ago. A. lived B. has lived C. lives D. is going to live3. - - _ Uncle Wang _ (mend) the TV yet? -Yes, he_. -When _ he _ it? - Yesterday.4. -I _ (see) the film Chicken Run. - Where and when _ you _ (see) it? - Last week.5. -_ you _ (see) the film last night? -No, I _ (see) it fo

5、r several times.6. -_ you _ (return) the book to the library? - Not yet. But I _ (return) it this afternoon. 6. Ten years have passed since they got married. 7. Jim has gone to Beijing for 2 years. 8.What time have the factory opened? 9.I have gone to Chunhua Middle School twicehashas been indidopen

6、been toMake up sentences, please! go last yeareat this morningleave yesterdaygive a moment agoride just nowwrite last nightcatch when I was only 10make a mistake the day before yesterdaypay the next morningsweep after classUse the given words to make a dialogue, please!Shanghai, once , last yearan o

7、ld man, help , yesterday, many timesJoin the League, last month, for a monthThank you!2. 什么情况下使用什么情况下使用has ?主语是第三人称单数时， 使用has.He has finished his homework.She has gone home.Daming has seen the film.My father has had dinner.其他情况下使用haveI have You have We have They have 1. I _(have) lunch already 2. Ha

8、s the train_ (arrive), yet? 3.Tome _ never_ (be to ) China. 4. The twin _just _(see) my father. 5. The twins _(see) my father just now.have hadarrivedhasbeen tohasseensaweg.1. He had his breakfast at 6:00 He has had his breakfast. 2. When did you come here? I watched the football match on TV at 9:00.