新人教版英语八年级下册Unit-8-Have-.pptx
Present Perfect Tense Have you ever read Little Woman?I havent read it yet.But I have had the book for ten years. And I have kept it on my bookshelf(书架）书架） since ten years ago.Have you ever read Little Woman?I havent read it yet.But I have had the book for ten years. And I have kept it on my bookshelf(书架）书架） since ten years ago.3.现在完成时的用法现在完成时的用法2.一般疑问句及否定句的一般疑问句及否定句的结构结构1.现在完成时的构成现在完成时的构成4. 时间状语时间状语2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语主语主语+havehas+动词过去分词动词过去分词助动词助动词：talk -like - study - stop - havehashavehas动词过去分词规则变化：动词过去分词规则变化：talkedlikedstudiedstopped2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语Have/Has + 主语主语 + 动词过去分词动词过去分词疑问式：疑问式：I have finished my homework.Have you finished your homework?A: Have you surfed the internet (上网上网)? B: Yes, I have . I have surfed the internet. No, I havent. I havent surfed the internet.2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语Have/Has + 主语主语 + 动词过去分词动词过去分词否定式否定式: 主语主语 + have/has + not + 动词过去分词动词过去分词. 疑问式：疑问式：1) We have visited the museum. (改为一般疑问句改为一般疑问句)2)They have seen the film. (改为否定句改为否定句)4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答改为一般疑问句并做否定回答)Have you visited the museum?have not=haventhas not=hasnt2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语Have/Has + 主语主语 + 动词过去分词动词过去分词否定式否定式: 主语主语 + have/has + not + 动词过去分词动词过去分词. 疑问式：疑问式：1) We have visited the museum. (改为一般疑问句改为一般疑问句)2) They have seen the film. (改为否定句改为否定句)4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答改为一般疑问句并做否定回答)They havent seen the film.2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语Have/Has + 主语主语 + 动词过去分词动词过去分词否定式否定式: 主语主语 + have/has + not + 动词过去分词动词过去分词. 疑问式：疑问式：1) We have visited the museum. (改为一般疑问句改为一般疑问句)2) They have seen the film. (改为否定句改为否定句)3)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答改为一般疑问句并做否定回答)2.一般疑问句及否定句的一般疑问句及否定句的结构结构2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语Have/Has + 主语主语 + 动词过去分词动词过去分词否定式否定式: 主语主语 + have/has + not + 动词过去分词动词过去分词. 疑问式：疑问式：1) We have visited the museum. (改为一般疑问句改为一般疑问句)2)They have seen the film. (改为否定句改为否定句)3)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答改为一般疑问句并做否定回答) Has Jenny had her for three days?No,she hasnt.2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语present(now)futurepastMum, I them.John, clean your John, clean your teeth please.teeth please.2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语1)过去发生过去发生或已经完成完成的某一动作对对现在造成的影响或结果现在造成的影响或结果。2)现在完成时表示从过去一直持续到现在完成时表示从过去一直持续到现在的动作或状态。现在的动作或状态。Someone has broken the door. (窗户现在是坏的窗户现在是坏的)I have already lost the key. (我现在没有钥匙我现在没有钥匙)I havent read that book yet . (不了解书的内容不了解书的内容)I have just cleaned my hands. (手是干净的手是干净的)2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语1)过去发生过去发生或已经完成完成的某一动作对对现在造成的影响或结果现在造成的影响或结果。2)现在完成时表示从过去一直持续到现在完成时表示从过去一直持续到现在的动作或状态。现在的动作或状态。She has learned English for 5 years. He has lived in Beijing since ( 自从自从)he was born .Have you stayed here since ( 自自从从) 3 oclock?2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语Have you ever read Little Woman?I havent read it yet.But I have had the book for ten years. And I have kept it on my bookshelf(书架）书架） since ten years ago.3.现在完成时的用法现在完成时的用法2.一般疑问句及否定句的一般疑问句及否定句的结构结构1.现在完成时的构成现在完成时的构成4. 时间状语时间状语2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语for+时间段时间段since+1. Mr. Brown has had his TV _ 15 years. 2. Ive taken driving lessons _ last month. 3. My sister has had her cell phone _ a month . 4. My friends havent visited me _ my birthday. 5. We havent used our car _ a long time . 6. She hasnt had a good cup of coffee _years. 7. Tom has worn glasses _ he was 7 years old. forforforforsincesincesince时间点时间点句子句子2.一般疑问句及否定句的一般疑问句及否定句的结构结构3.现在完成时的用法现在完成时的用法1.现在完成时的构成现在完成时的构成4. 时间状语时间状语for+时间段时间段since+时间点时间点句子句子already(已经已经) yet(已经已经)just(刚刚刚刚) ever(曾经曾经)never(从来没有）从来没有）before（从前）（从前）肯定句中肯定句中否定，疑问句末否定，疑问句末肯定句中肯定句中肯定、否定句中肯定、否定句中句中句中句末句末1 1）一般过去时表示过去某时发生的动作或单纯叙述过）一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调去的事情，强调动作动作，和现在不发生关系。而现在完成，和现在不发生关系。而现在完成时表示过去发生的某一动作对现在造成的影响或结果，时表示过去发生的某一动作对现在造成的影响或结果，强调的是强调的是现在的现在的情况情况。2 2）一般过去时常与具体的时间状语连用，而现在完成）一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。时通常与模糊的时间状语连用，或无时间状语。 一般过去时的时间状语有：一般过去时的时间状语有：yesterday, last weekyesterday, last week，ago, ago, in1980, in October, just now,in1980, in October, just now,等具体的时间状语。等具体的时间状语。 共同的时间状语有：共同的时间状语有：this morning, tonight, this summer, this morning, tonight, this summer, before, already,before, already,等。等。 现在完成时的时间状语有：现在完成时的时间状语有：for, since, ever, never, just, for, since, ever, never, just, already, yet, in past yearsalready, yet, in past years等不确定的时间状语等不确定的时间状语。 I saw this film yesterday. （只说明动作发生在过去。）只说明动作发生在过去。） I have seen this film. （强调对现在的影响，电影的内容已经知强调对现在的影响，电影的内容已经知道了。）道了。） She has returned from Paris.（她已从巴黎回来了。）她已从巴黎回来了。）She returned yesterday. （她是昨天回来的。）她是昨天回来的。）He has been in the League for three years. (在团内的状态可延续在团内的状态可延续)He joined the League three years ago.( 三年前入团，三年前入团，joined为为短暂行为。短暂行为。) 注意注意：句子中如有一般过去时的时间副词句子中如有一般过去时的时间副词（如（如 yesterday, last week, in 1960）时，不能使用现在完成时，要用过去时。时，不能使用现在完成时，要用过去时。例如：例如： （错）（错）Tom has written a letter to his parents last night. （对）（对）Tom wrote a letter to his parents last night. eat- see- read- keep- have- be-leave- make- go- meet- come- write-tell- buy- find- build- builtfoundtoldcomegonelefthadreadeatenboughtwrittenmetmadebeenkeptseen1. I _(wait) for him for two hours . I am very angry .2. He _ (be) a doctor since he was twenty .3. The film _ (be) on for fifteen minutes . 4. _ you ever _ (read) that book before ?5. _ you ever _ (try) to change her ?6. No one _ (arrive) here yet .7. _ the bus _ (leave) yet ?8. I _ (not talk) to him yet .havent talkedHas lefthas arrivedHave triedHave readhas beenhas beenhave waited用所给动词的适当形式填空用所给动词的适当形式填空1. She has done her homework. (改否定句改否定句)2. She has already told us the news. (改否定句改否定句)3. The rain has already stopped. (改一般疑问句改一般疑问句)4. I have waited here for two hours. (划线提问划线提问)5.He has lived in ShangHai since he left Beijing. (划线提问划线提问)6. They have bought a new car, _ _? (反义疑反义疑问句问句)7. She has learned French since 2002. (同意句同意句) She has learned French _ 2 years. She has learned French _ 2 years _. She hasnt done her homework. She hasnt told us the news yet. Has the rain stopped yet?How long have you waited here ?havent they forsinceagoWhere has he lived since he left Beijing?按要求改变句子。按要求改变句子。Summary.回顾一下本节课的重点内容。回顾一下本节课的重点内容。1.现在完成时的结构是什么？现在完成时的结构是什么？2.动词变为过去分词的规则有几条？动词变为过去分词的规则有几条？3.现在完成时的用法是什么？现在完成时的用法是什么？4.本节课中我们涉及到了哪本节课中我们涉及到了哪 些与现些与现在完成时连用的时间状语及副词在完成时连用的时间状语及副词。1.To finish the exercises in the exercise book.2.To remember the irregular past participle of some verbs.Homework
