- 人教2011课标版_八年级下册(2013年10月第1版)_初中英语_Unit 8 Have you read Treasure Island yet _Section A Grammar focus 4a—4c_ppt课件_(含教案)_市级优课_(编号:a45ad)
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Present Perfect Tense 现在完成时现在完成时 Haveyoueverread Little Woman? Ihaventreadit yet. ButIhavehadthebook fortenyears. AndIhavekeptiton mybookshelf(书架) sincetenyearsago. Haveyoueverread Little Woman? Ihaventreadit yet. ButIhavehadthebook fortenyears. AndIhavekeptiton mybookshelf(书架) sincetenyearsago. 3.现现在完成时时的用法 2.一般疑问问句及否定句的 结结构 1.现现在完成时时的构成 4. 时间时间 状语语 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 主语+havehas+动词过去分词 助动词: talk- like- study- stop- havehas 动词过去分词规则变化: talked liked studied stopped 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 Have/Has+主语语+动词过动词过 去分词词 疑问式: Ihavefinishedmyhomework. Haveyoufinishedyour homework? A: Have you surfed the internet (上网)? B: Yes, I have . I have surfed the internet. No, I havent. I havent surfed the internet. 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 Have/Has+主语语+动词过动词过 去分词词 否定式: 主语语+have/has+not+动词过动词过 去分 词词. 疑问式: 1) Wehavevisitedthemuseum.(改为一般疑问句) 2)Theyhaveseenthefilm.(改为否定句) 4)Jennyhashadherlunchforthreedays. (改为一般疑问句并做否定回答) Have you visited the museum? havenot=haventhasnot=hasnt 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 Have/Has+主语语+动词过动词过 去分词词 否定式: 主语语+have/has+not+动词过动词过 去分 词词. 疑问式: 1) Wehavevisitedthemuseum.(改为一般疑问句) 2) Theyhaveseenthefilm.(改为否定句) 4)Jennyhashadherlunchforthreedays. (改为一般疑问句并做否定回答) They havent seen the film. 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 Have/Has+主语语+动词过动词过 去分词词 否定式: 主语语+have/has+not+动词过动词过 去分 词词. 疑问式: 1) Wehavevisitedthemuseum.(改为为一般疑问问句) 2)Theyhaveseenthefilm.(改为为否定句) 3)Jennyhashadherlunchforthreedays. (改为为一般疑问问句并做否定回答) 2.一般疑问问句及否定句的 结结构 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 Have/Has+主语语+动词过动词过 去分词词 否定式: 主语语+have/has+not+动词过动词过 去分 词词. 疑问式: 1) Wehavevisitedthemuseum.(改为为一般疑问问句) 2)Theyhaveseenthefilm.(改为为否定句) 3)Jennyhashadherlunchforthreedays. (改为为一般疑问问句并做否定回答) Has Jenny had her for three days? No,she hasnt. 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 present(now) future past Mum, I havehave already(already(已已经经经经) ) cleanedcleaned them. John, clean your teeth please. 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 1)过去发生或已经完成的某一动作对 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 现在的动作或状态。 Someonehasbrokenthedoor. (窗户现在是坏的) Ihavealreadylostthekey. (我现在没有钥匙) Ihaventreadthatbookyet. (不了解书的内容) Ihavejustcleanedmyhands. (手是干净的) 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 1)过去发生或已经完成的某一动作对 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 现在的动作或状态。 ShehaslearnedEnglishfor5 years. HehaslivedinBeijingsince( 自从)hewasborn. Haveyoustayedheresince(自 从)3oclock? 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 Haveyoueverread Little Woman? Ihaventreadit yet. ButIhavehadthebook fortenyears. AndIhavekeptiton mybookshelf(书架) sincetenyearsago. 3.现现在完成时时的用法 2.一般疑问问句及否定句的 结结构 1.现现在完成时时的构成 4. 时间时间 状语语 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 for+时间段 since+ 1. Mr.BrownhashadhisTV_15years. 2. Ivetakendrivinglessons_lastmonth. 3. Mysisterhashadhercellphone_amonth. 4. Myfriendshaventvisitedme_my birthday. 5. Wehaventusedourcar_alongtime. 6. Shehasnthadagoodcupofcoffee_years. 7. Tomhaswornglasses_hewas7yearsold. for for for for since since since 时间点 句子 2.一般疑问问句及否定句的 结结构 3.现现在完成时时的用法 1.现现在完成时时的构成 4. 时间时间 状语语 for+时间段 since+ 时间点 句子 already(已经) yet(已经) just(刚刚) ever(曾经) never(从来没有) before(从前) 肯定句中 否定,疑问句末 肯定句中 肯定、否定句中 句中 句末 一般过去时与现在完成时之一般过去时与现在完成时之比较比较 1)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,强调动作,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, 强调的是现在的情况。 2)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。 一般过去时的时间状语有:yesterday, last week,ago, in1980, in October, just now,等具体的时间状语。 共同的时间状语有:this morning, tonight, this summer, before, already,等。 现在完成时的时间状语有:for, since, ever, never, just, already, yet, in past years等不确定的时间状语。 请请大家认真分析比较下列各例句:大家认真分析比较下列各例句: Isawthisfilmyesterday.(只说明动作发生在过去。) Ihaveseenthisfilm.(强调对现在的影响,电影的内容已经知 道了。) ShehasreturnedfromParis.(她已从巴黎回来了。) Shereturnedyesterday.(她是昨天回来的。) HehasbeenintheLeagueforthreeyears.(在团内的状态可延续 ) HejoinedtheLeaguethreeyearsago.(三年前入团,joined为 短暂行为。) 注意:句子中如有一般过去时的时间副词(如yesterday,last week,in1960)时,不能使用现在完成时,要用过去时。例如 : (错)Tomhaswrittenalettertohisparentslastnight. (对)Tomwrotealettertohisparentslastnight. eat-see- read-keep- have-be- leave-make- go-meet- come-write- tell-buy- find-build-builtfound told come gone left had read eaten bought written met made been kept seen 1.I_(wait)forhimfortwohours.Iam veryangry. 2.He_(be)adoctorsincehewastwenty. 3.Thefilm_(be)onforfifteenminutes. 4._youever_(read)thatbookbefore? 5._youever_(try)tochangeher? 6.Noone_(arrive)hereyet. 7._thebus_(leave)yet? 8.I_(nottalk)tohimyet.haventtalked Hasleft hasarrived Havetried Haveread hasbeen hasbeen havewaited 用所给动词的适当形式填空 1.Shehasdoneherhomework.(改否定句) 2.Shehasalreadytoldusthenews.(改否定句) 3.Therainhasalreadystopped.(改一般疑问句) 4.Ihavewaitedherefortwohours.(划线提问) 5.HehaslivedinShangHaisinceheleftBeijing.(划线提问) 6.Theyhaveboughtanewcar,_?(反义疑 问句) 7.ShehaslearnedFrenchsince2002.(同意句) ShehaslearnedFrench_2years. ShehaslearnedFrench_2years_. 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 for since ago Where has he lived since he left Beijing? 按要求改变句子。 Summary. 回顾一下本节课的重点内容。 1.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? 3.现在完成时的用法是什么? 4.本节课中我们涉及到了哪 些与现 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 Thank you for listening!Thank you for listening!Thank you for listening! unit 8 现在完成时教案 Teaching objects 1、现在完成时的概念、基本结构、信号词; 2、动词过去分词变化规则; 3、现在完成时与一般过去时的区别 Key points: 1 现在完成时的概念、基本结构、信号词; 2 for 和 since 用法区别; Difficulties: 1、for 和 since 用法区别; 2、延续性动词和非延续性动词用法区别; Teaching Process: Step 1: Warm- up & Lead in T: Good morning, everyone. S: Good morning T:We have said the present perfect tense, now, this class we will summarize the function of present perfect tense. Step 2: Presentation T:现在完成时的结构是怎样的呢? Ss: T: 肯定句:主语+have/has + V 过分+其他 否定句怎么变呢? T: 否定句: 主语+have/has not +V 过分 +其他 一般疑问句:Have/has + 主语+ V 过分 + 其他 Yes,主语+have/has. No, 主语+ have/has not. (look at the screen,the example of this structure) T: 动词过去分词变化规则: (同动词过去式变化规则:直、去、双、改+不规) talk - like - study - stop - read- keep- have- be- leave- make- go- meet- come- write- tell- buy- find- build- T: 现在完成时的信号词: Already, yet, ever, just, never 等; for+时间段 Since+时间点或句子 例句: Mr. Brown has had his TV _ 15 years. Ive taken driving lessons _ last month. My sister has had her cell phone _ a month . My friends havent visited me _ my birthday. We havent used our car _ a long time . She hasnt had a good cup of coffee _years. Tom has worn glasses _ he was 7 years old. T:现在完成时的用法 1)过去发生或已经完成的某一动作对现在造成的影响或结果 例子: Someone has broken the door. (窗户现在是坏的) I have already lost the key. (我现在没有钥匙) 2)现在完成时表示从过去一直持续到现在的动作或状态。 例子:She has learned English for 5 years. He has lived in Beijing since ( 自从)he was born . Step 3 : Compare T:一般过去时与现在完成时有什么区别? 1)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,强调动作, 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,强调的是现在的情况。 2)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。 例句:I saw this film yesterday. (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 道了。 ) She has returned from Paris.(她已从巴黎回来了。 ) She returned yesterday. (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) He joined the League three years ago.( 三年前入团,joined 为短暂行为。) Step 4: Consolidation 复习并总结: 1、现在完成时的概念、基本结构、信号词; 2、动词过去分词变化规则; 3、 for 和 since 用法区别; 4、现在完成时与一般过去时的区别 Step 5: Homework 1.To finish the exercises in the exercise book. 2.To remember the irregular past participle of some verbs. Reflection After this class, the students should know the structure and the function of present perfect tense. Beside ,the important part in this tense is the irregular verbs.Students should repeat this part. But in this class, because of the different English level of students, some students can not understand what we have said. However, most of students can master this tense. It is one of the most important tense in junior high school study. For this class, I thought I should give more specific information of the present perfect tense to students and pay more attention to the examples.
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