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1、现现 在在 完完 成成 时时 态态The Present Perfect Tense1study EnglishHow long have you been studying English?I have been studying English for three years.(2011-now)2011started studying English2014studying3 yearshas been studyingWhen did you start studying English? In 20112现在完成时 Present perfect tensePresent perfe
2、ct tense 构成构成: :助动词have/has + 过去分词1.肯定句现在完成时的肯定句式是“have（has）过去分词”。 注意：该句式中的have或has是助动词，has用于第三人 称单数，其它人称一律用have。eg. He has eaten supper.They have eaten supper.32.疑问句现在完成时的一般疑问句式是把助动词have或has提 到主语之前。 (回答用“Yes，-have/has“No，- -havent/hasnt” ）3.否定句： 现在完成时的否定句式是“havent/hasnt过去分词”。 eg. Has he eaten suppe
3、r?Yes, he has./No, he hasnt.eg. He hasnt eaten supper.They havent eaten supper.4现在完成时态的分类 用法一、 1。表过去发生的某一动作对现在造成的影响或结果, （强调结果现在还存在）例如 I have just cleaned my clothes. 我刚洗过衣服。 （“洗衣服”是发生在过去的动作，对现在造成的结果是 “衣服干净了”） I have just had my breakfast. (对现在的影响：不饿) Has he had his breakfast? Yes, he has. When did h
4、e have his breakfast?He had breakfast at 6:00.5 1. My father bought many books for me yesterday . Now , I have a lot to read because _ 2. I saw this film last week. Now, I know this film because I_. 3. I did my homework yesterday. Now, I can give it to the teacher because I_my father has bought many
5、 books for me.have seen it before have done it.6通常与表示包括现在在内的时间副词 just (谓语动词之前) （刚 刚）, already（已经(肯定句) ）, before, yet（一般疑问(句末） ：已经；否定句：还） never, ever (疑问句) twice recently(近来）等状语连用 1 Tom has already finished his homework.Tom hasnt finished his homework yet.2 I have just had my lunch.She hasnt seen you
6、 before.3 Have you ever eaten fish?I have never eaten fish I have never heard of that before. Have you ever ridden a horse? She has already finished the work. Have you milked the cow yet? Yes, I have done that already. Ive just finished my homework. He has not come yet. 7ExercisesExercises 1. I _(ha
7、ve) lunch already. . 2. the train_ (arrive) yet? 3.Tom _ never_ (be ) to China. 4. The twin _just _(see) my father. 5. The twins _(see) my father just now. 6._ you ever _(ride) a horse? Never.have had Has arrivedhasbeen hasseensaw have ridden87._ you _(clean) the room?Yes, we_(do) that already.When
8、_ you _(do) it?We _(do) it an hour ago.8._ he _(see) this film yet? No.When _ he _(see) it?He _ it tomorrow. 9. How many times _you_(come) here? Once.Havecleanedhave donediddodidHasseenwillseewill seehavecome91 你已经问过这个问题两边了，别再烦我了。2我能借你的字典用一下吗？对不起，已经借给 tom了。3 你以前见过她吗？不，从来没有过。4 你曾经去过北京吗？是的我去过那儿三次。5 你已
9、经看完那本小说了吗？是的，我已经把 它还给图书馆了。10 用法二：表示过去已经开始，持续到现在的动作或状态，也可以表 示一直持续到现在并可能还将持续下去。 A 动词使用延续性动词。 B 和表时间段的时间状语连用。 常与for或since引导的时间连用so far, up to/till now, in the last/past+一段时间，all ones life, by now, these days, these days、for two years、since 1984、since he came here I havent seen her these days.She has le
10、arnt English for 3 years/since 3 years ago.They have lived here since 1990.What has happened to the USA in the last 350 years?11注 意： (1)since一段时间agofor时间段; since two weeks ago=for two weeks;I have kept the library book for a week.= I have kept the library book since a week ago. (2)since + 时间点for时间段s
11、ince 2000=for years (3) since+从句(常用一般过去时)The Greens have lived in Beijing since they moved to Beijing from Paris (4)It is /has been +一段时间 + since 从句.自从某事发生已有一段时间了. It is /has been two years since my brother joined the army. 12一、用for和since填空。_three hours_three oclock_two days_yesterday afternoon_I ca
12、me here_last Sunday_a week_a long time_1997_two weeks_three years ago_ last monthforsinceforsincesincesinceforforsinceforsincesince13用for和since填空1.They have been learning Chinese _they came to China. 2. I havent seen her _ a long time. 3. He has been living here _ 2001. 4. She has been doing her hom
13、ework _two hours. 5. Its 5 years _ we left school. 6. How long has Mary been a teacher? _ two years ago. sincefor since forsinceSince14 用for 或since填空。 1. Jill has been in Ireland_Monday. 2. Jill has been in Ireland_three days. 3. My aunt has lived in Australia_15 days. 4. Margaret is in her office.
14、She has been there_7 oclock. 5. India has been an independent country_1974. 6. The bus is late. Weve been waiting_20 minutes. 7. Nobody lives in those houses. They have been empty many years. 8. Mike has been ill_a long time. He has been in hospital _October 9. Its ten years _ we met each other last time. 10. He has taught English _ 25 years. 11. The Greens have lived on the farm _ 1990. 12. They have been practicing the guitar _ two hours. 13.How long have you been a reporter? _ 8 years ago. 14. I havent gone for a walk in the park _ a long time. 15. He
