初中现在完成时态ppt课件.ppt

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1、现在完成时现在完成时 The Present Perfect Tense一 构成:have/has+动词动词过去分词过去分词 (pp)(pp)肯定 主语+have/has + pp否定 主语+have/has not + pp疑问 Have/Has + 主语+ pp+其他 Yes, 主+have/has. No, 主+havent/hasnt.I have finished my homework.I have not finished my homework.Have you finished your homework?Yes, I have./No, I havent.She has b

2、een to Europe.She hasnt been to Europe.Has she been to Europe?Yes, she has./No, she hasnt.1. 规则动词：与过去时变化相同。(1) 一般+-ed work-worked-worked(2) 以“ e ”结尾, + - d 。 live-lived -lived(3) “辅音字母 + y” 结尾，y 变 i, + -ed。 cry-cried-cried(4) 重读闭音节结尾(辅元辅)，双写后+-ed 。 drop-dropped-dropped 2 、不规则动词，见不规则表（p120）动词动词过去分词过去

3、分词 (pp)(pp)变化规则变化规则二 含义及用法1 表示过去发生的动作或事情，过去发生的动作或事情， 对现在的影响影响和产生的结果结果。 yet(否否/疑疑), already 已经已经ever/never 曾经曾经/从来不从来不 just 刚刚刚刚before 以前以前recently, lately 最近最近in/during the past/last 5 years 过去五年过去五年by now, so far, up to now, till now 迄今迄今 once, twice 一次一次all/in ones life 某人一生某人一生 （1）already肯定句肯定句:

4、“己经己经”Ive already had breakfast. (更常见) = Ive had breakfast already. (2) 表示一个从过去开始，一直持表示一个从过去开始，一直持续到现在的动作或状态。续到现在的动作或状态。注注: 有有already的句子在时态上并不都的句子在时态上并不都是现在完成时是现在完成时,判断时要看该词后是否判断时要看该词后是否有动词的过去分词有动词的过去分词.Eg. Shes already eighty years old. It was already very late.(2) yet否定句否定句:句末句末 “还还(没没)”疑问句疑问句: 句末

5、句末 “己经己经” Have you had breakfast yet?I havent had breakfast yet.注意：当在肯定句中含注意：当在肯定句中含alreadyalready或或justjust，变否定时，在句末加，变否定时，在句末加yetyet。 I havent seen the film yet. Mother has just cleaned the house.Mother hasnt cleaned the house yet. I have already seen the film. (3) never否定句否定句: 句中句中 “从来没有从来没有” Ive

6、 never been to Beijing.注注: 带带ever的肯定句变否定句时的肯定句变否定句时, 将将ever变变neverHe has ever made meal.He has never made meal.(4) just用于用于句中句中, 表示表示“刚刚刚刚”Ive just had breakfast. What have they just done?A: _ your brother _ a new watch? (buy )B: Not yet.Has bought yet A: _ you ever _ to the park? ( be )B: Yes, I ha

7、ve. Have been yet ever I _ never _ anything like that. (see )have seen yet ever never Tom _ in the factory since he left school ten years ago. (work )has worked yet ever never since I _ just _ the desk, you can take it to your classroom . (mend )have mended yet ever never since just He _ already _ a

8、 job. (find) has found yet ever never since just already since + (过去的过去的)时间点或一般过去时时间点或一般过去时I have been here since 2000.He has worked as a lawyer since 5 years ago.Theyve lived in CQ since they married in 2000.have/has gone to(去了未回来去了未回来)have/has been to(去了已回来去了已回来)have/has been in(去了呆在某地去了呆在某地) Tom

9、在哪儿？ 他去书店买书了。 我在北京待了5年了。 Jack 去过上海两次了-Where is Tom?-He has gone to the bookshop to buy some books.I have been in Beijing for 5 years.Jack has been to Shanghai twice. have/has been to have/has gone to have/has been in 1. Bill _London , he will come back tomorrow. 2. A: Where are the twins? B: They _t

10、he cinema. 3. I _Paris twice. He has never been there. 4. A: Have you ever _America ? B: No , never . 5. A: How long have you _China ? B: For one year. 6. He left for England two days ago. He _there for two days. 现在完成时现在完成时: : 强调这一动作产生的结果对现强调这一动作产生的结果对现在的影响或结果，在的影响或结果，与现在有关与现在有关。 一般过去时一般过去时: : 仅表示在过

11、去某一时刻曾发生仅表示在过去某一时刻曾发生过这一动作，过这一动作，与现在无关与现在无关。 他已学英语五年了。他已学英语五年了。 He has studied English for five years. 他曾学过五年英语。他曾学过五年英语。 He studied English for five years. （说明他还会继续学下去）（说明他还会继续学下去） （只说明他过去学过五年英语，但现在不学了。）（只说明他过去学过五年英语，但现在不学了。） Ive lived here for ten years. 我在这里住了我在这里住了10年。年。(现在仍住这儿现在仍住这儿) I lived he

12、re for ten years. 我在这里住过我在这里住过10年。年。(现在不住这儿了现在不住这儿了) He has bought a house. 他买了一栋房子。他买了一栋房子。(现现在已拥有这房子在已拥有这房子) He bought a house ten years ago. 他他10年前买年前买了一栋房子。了一栋房子。(现在是否仍拥有这房子不清楚现在是否仍拥有这房子不清楚)遇到遇到yesterday, Last year, in May, in+过过去某一年，去某一年，two days ago, the other day, just now等就用一般过去时等就用一般过去时 (表过去的时表过去的时间间)We will have ten tests next term.(改成现完时改成现完时)We have had ten tests this term.Have you _(ready) for the picnic?It has been five years since he _(leave)He _a lot of presents for his two children already.(buy)Have you bought some chicken wings?-Yes, I _.