现在完成时专项练习.doc

PAGE 3 时态讲解：现在完成时 （1）构成：现在完成时由助动词have + 过去分词构成，助动词have 有人称和数的变化。第三人称单数用has，其余用have. 现在完成时的否定式直接在助动词后面加上not、疑问式是把助动词提到主语之前。以study 为例，其否定式、疑问式和简单回答形式如下： 否定式 疑问式 I have not (haven’t) studied…. Have I studied…? You have not (haven’t) studied…. Have you studied…? He has not (hasn’t) studied…. Has he studied…? （2）用法： 1）现在完成时通常表示在说话之前已经完成的动作或存在的状态。说话人强调的是该动作或状态对现在的结果或影响。 My daughter has just gone out. 我女儿刚出去。 I’m sure we’ve met before. 我肯定我们以前见过面。 She has arrived. 她到了。 2）表示持续到现在的动作或状态，往往和包括现在在内的表示一段时间的状语连用，如recently, already, just, lately, for…, since…,yet等。如： I haven’t heard from her these days. 这些日子我没有收到她的信。 We haven’t seen you recently. 最近我们没有见到你。 They have been away for two years. 他们离开已经两年了。 She has been with us since Monday. ★注意： 2）have (has) been 和have (has) gone的区别：表示“曾到过某地”要用 “have (has) been”; 表示“已经去某地”要用 “have (has) gone”。试比较： Where has he been? 他刚才到哪里去了？（已经回来了） Where has he gone? 他上哪儿去了？（人不在） They have been to Canada. 他们到过加拿大。（现在已经不在加拿大） They have gone to Canada. 他们到加拿大去了。（可能在路上和已经到加拿大）. 3）现在完成时不能和表示过去的时间状语连用，如yesterday, last year, in 1976, two days ago, just now, when I came in，但可以和already, yet, sometimes, always, often, before, lately, recently, once, twice, ever, never等连用。 现在完成时专项练习 一、用所给动词的适当形式填空。 1. I____ 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. Have you _______(get) any new CDs? 8. My family have never _______ (be) to Sanya. 9. They _______ ever _______ (eat) fish and chips. 10. I _______ just _______ (lose) my science book. 11. Has Tom _______ (finish) his work? 12. I have already _______ (read) this book. 13. She hasnt _______(return) her book yet. 14. _________ you ever ____(eat ) chocolate sundaes ? No, never. 15. My father ____ just ____ (come)