人教版八下-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：456af).zip

Winter has already come. Will it still be far in spring? 冬天来了，春天还会远吗 ？ The Present Perfect Tense 现在完成时 一基本结构： 助动词have/has+过 去分词(done) 二句型： 肯定句：主语+have/has+过去分词+其他 否定句： 主语+have/has+not+过去分词+其他. 一般疑问句： Have/Has+主语+过去分词+其他. 简略答语: .(肯定)Yes,主语+have/has. .(否定)No,主语+havent/hasnt. 三、现在完成时 用法 （1）现在完成时表示过去发生或已经完成的动作对现 在造成的影响或结果 Ihavespentallofmymoney(sofar).(含义是:现 在我没有钱花了.) GuoXiaoxiaohas(just/already)come.(含义： 郭晓晓现在在这儿) Myfatherhasgonetowork.(含义是:我爸爸现在 不在这儿) 三、现在完成时 用法 （2）现在完成时可以用来表示 发生在过去某一时刻的,持续到 现在的动作（用行为动词表示 ）或状态（be动词表示）常与 for（+时间段）,since（+时间 点或过去时的句子）连用. 练习一： 1.Zhaolan_already_inthisschoolfortwoyears. A.was;studyingB.will;study C.has;studiedD.arestudying 2.Hurryup！Theplay_fortenminutes. A.hasbegunB.hadbegun C.hasbeenonD.began 3.Doyouknowhimwell？ Sure.We_friendssincetenyearsago. A.wereB.havebeen C.havebecomeD.havemade C C B 四现在完成时的标志 1.以already, just和yet为标志 2.以ever和never为标志 3.以动作发生的次数为标志 4.以so far（到目前为止）和before 为标志 5.for+时间段和since+过去时间 点（过去从句）为标志 练习二: 4、HaveyoumetMrLi_？ A.justB.agoC.beforeD.amoment ago 5、Ourcountry_alotsofar. Yes.Ihopeitwillbeeven_. A.haschanged；wellB.changed；good C.haschanged；betterD.changed；better 6、Hehas_beentoShanghai，hashe？ A.alreadyB.neverC.everD.still C C B Have/Hasgone(to):去了(现在不在说话现场) Whereisyourfather？Hehasgoneto Shanghai. Have/Hasbeen(to):去过（已不在去过的地方 ） MyfatherhasbeentoShanghaifortwo months./sincetwomonthsago. Have/hasbeenin：呆了多久（还在所呆的地 方） MyfatherhasbeeninShanghaifortwo months./sincetwomonthsago. 注意一：、has gone (to),has been (to), has been (in)的区别 练习三： 7.ThesefarmershavebeentotheUnited States. Really？When_there？ A.willtheygoB.didtheygo C.dotheygoD.havetheygone 8.Howlonghaveyou_here？ Abouttwomonths. A.beenB.goneC.comeD.arrived 9.MissGreenisntintheoffice.she_tothe library. A.hasgoneB.wentC.willgoD.hasbeen D A A 注意二：For与since用法区别 for+时间段 Hehasstayedhereforfiveyears. since+时间点（译为：自从以来） Hehasstayedheresince5oclock. since+时段+ago Hehasstayedheresincefiveyearsago. since+从句（过去时） Hehasstayedheresincehecamehere. Itis+时段+since+从句（过去时） Itisfiveyearssincehecamehere. 6、时段+haspassed+since+从句 Fiveyearshaspassedsincehecamehere. 练习四： 10.It_tenyearssinceheleftthearmy. A.isB.hasC.willD.was 11.Hurryup！Theplay_fortenminutes. A.hasbegunB.hadbegun C.hasbeenonD.began 12._hasMrWhitebeenamemberofGreenerChina sincehe_toChina？ A.Howsoon，comesB.Howoften，got C.Howlong，cameD.Howfar，arrived A C C 注意三：短暂性动词与延续性动 词的转换 1、直接转化 buy-haveborrow-keep catchacold-haveacold 2、转化成be+名词 jointhearmy-beasoldier jointheParty-beaPartymember gotoschool-beastudent 3、转化成be+形容词/副词 come/become-beinfinish-beover leave-beawaydie-bedead open-beopenclose-beclosed fallasleep-beasleep 4、转化成be+介词短语 gotoschool-beinschool jointhearmy-beinthearmy 练习五： 13.Hisuncle_formorethan9years. A.hascomehereB.hasstartedtowork C.haslivedthereD.hasleftthe university 14.Thisfactoryopenedtwentyyearsago.（同义句转换） Thisfactory_fortwenty years. 15.MissGaoleftanhourago.（同义句转换） MissGao_an hourago. C hasbeenopen hasbeenawaysince 中考链接： 1.（2016湖北荆门，30）Areyougoingtowatch “RunningMan”tonight? _No!I_itwithmyparentsonlyonce.Idontthinkits exciting. A.seeB.haveseenC.willseeD.amseeing 2.(2016上海，39）Thismedicine_millionsof peopleslivessinceitwasputintouse. A.issavingB.willsaveC.hassavedD.hadsaved 3.(2016合肥高新区二模，43）Dontworry!Your backpackalreadly_andnowyoucantakeitand enjoyshoppingwithyourclassmates. _ThanksMom. A.willcleanB.hascleaned C.willbecleanedD.hasbeencleaned B C D Homework: 1.ReviewThe Present Perfect Tense. 2.Finish the exercises. 3.Preview the new lesson. Unit8 have you read Treasure Island yet? Grammar focus_The Present Perfect Tense 教学目标：了解并掌握现在完成时的基本句型结构。 教学重、难点: 1.has1.has gonegone (to),has(to),has beenbeen (to),(to), hashas beenbeen (in)(in) 的区别的区别 2.For2.For与与sincesince用法区别用法区别 3.短暂性动词与延续性动词的转换 教学方法：讲解法、练习法 教具准备：PPT 教学过程： Step1.Lead-in WinterWinter hashas alreadyalready e. WillWill itit stillstill bebe farfar inin spring?spring? 冬天来了，春天还会远吗？冬天来了，春天还会远吗？ Step 2.Teaching New Language 一 基本结构：基本结构：助动词助动词have/has+have/has+过去分词过去分词(done)(done) 二句型：句型：肯定句：肯定句：主语主语+have/has+have/has+过去分词过去分词+ +其他其他 否定句否定句：主语+have/has+not+过去分词+其他. 一般疑问句一般疑问句： Have/Has+主语+过去分词+其他. 简略答语简略答语: : .(.(肯定肯定) ) Yes,Yes, 主语主语 + + have/has.have/has. .(.(否定否定) )No,No, 主语主语 + + havent/hasnt.havent/hasnt. 三、现在完成时现在完成时 用法用法 （1 1）现在完成时表示过去发生或已经完成的动作对现在造成的影）现在完成时表示过去发生或已经完成的动作对现在造成的影 响或结果响或结果 MyMy fatherfather hashas gonegone toto work.(work.(含义是含义是: :我爸爸现在不在这儿我爸爸现在不在这儿) ) GuoGuo XiaoxiaoXiaoxiao hashas (just/already)(just/already) comecome. . ( (含义：郭晓晓现在在这儿含义：郭晓晓现在在这儿) ) I I havehave spentspent allall ofof mymy moneymoney (so(so far).(far).(含义是含义是: :现在我没有钱了现在我没有钱了.).) （2 2）现在完成时可以用来表示发生在过去某一时刻的）现在完成时可以用来表示发生在过去某一时刻的, ,持续到现在持续到现在 的动作（用行为动词表示）或状态（的动作（用行为动词表示）或状态（bebe动词表示）常与动词表示）常与forfor（+ +时时 间段）间段）,since,since（+ +时间点或过去时的句子）连用时间点或过去时的句子）连用. . 练习一练习一： 1.Zhao lan _already_ in this school for two years. A. was; studying B. will; study C.has; studied D.are studying 2.Hurry up！ The play _ for ten minutes. A. has begun B. had begun C. has been on D. began 3.Do you know him well ？ Sure.We _ friends since ten years ago. A. were B. have been C. have become D. have made 四现在完成时的标志四现在完成时的标志1.1.以以already,already, justjust和和yetyet为标志为标志 2.2.以以everever和和nevernever为标志为标志 3.3.以动作发生的次数为标志以动作发生的次数为标志 4.4.以以soso farfar（到目前为止）和和beforebefore为标志为标志 5.for+5.for+时间段时间段 和和since+since+过去时间点（过去过去时间点（过去 从句）为标志从句）为标志 练习二练习二: : 4、Have you met Mr Li _ A. just B. ago C.before D. a moment ago 5、Our country _ a lot so far. Yes. I hope it will be even _. A. has changed ； well B. changed ； good C. has changed ； better D. changed ； better 6、He has _ been to Shanghai， has he ？ A. already B.never C.ever D. still 注意一注意一：hashas gonegone (to),has(to),has beenbeen (to),(to), hashas beenbeen (in)(in) 的区别的区别Have/Has gone(to) :去了(现在不在说话现场) Where is your father？He has gone to Shanghai. Have/Has been (to) :去过（已不在去过的地方） My father has been to Shanghai for two months. /since two months ago. Have/has been in：呆了多久（还在所呆的地方） My father has been in Shanghai for two months. /since two months ago. 练习三练习三 7.These farmers have been to the United States. Really ？ When _ there ？ A. will they go B. did they go C. do they go D. have they gone 8.How long have you _ here？ About two months. A. been B. gone C. come D. arrived 9.Miss Green isnt in the office . she_ to the library. A.has gone B. went C.will go D. has been 注意二注意二：ForFor与与sincesince用法区别用法区别 for+时间段 He has stayed here for five years. since+时间点（译为：自从以来） He has stayed here since 5 oclock. since+时段+ago He has stayed here since five years ago. since+从句（过去时） He has stayed here since he came here. It is+时段+since+从句（过去时） It is five years since he came here. 6、时段+has passed +since+从句 Five years has passed since he came here. 练习四练习四 10.It _ ten years since he left the army. A. is B. has C. will D. was 11.Hurry up！ The play _ for ten minutes. A. has begun B. had begun C. has been on D. began 12._has Mr White been a member of Greener China since he _ to China？ A. How soon， comes B. How often， got C. How long， came D. How far， arrived 注意三：短暂性动词与延续性动词的转换 1、直接转化 buy-have borrow-keep catch a cold-have a cold 2、转化成be+名词 join the army-be a soldier join the Party-be a Party member go to school -be a student 3 3、转化成、转化成be+be+形容词形容词/ /副词副词 come/become-be in finish-be over leave-be away die-be dead open-be open close-be closed fall asleep -be asleep 4、转化成be + 介词短语 go to school-be in school join the army-be in the army 练习五练习五 13. His uncle _ for more than 9 years. A. has come here B. has started to work C. has lived there D. has left the university 14.This factory opened twenty years ago.（同义句转换） This factory _ _ _ for twenty years. 15.Miss Gao left an hour ago. （同义句转换） Miss Gao _ _ _ _ an hour ago. 中考链接：中考链接： 1.（2016湖北荆门，30）Are you going towatch “Running Man” tonight? _ No! I_ it with my parents only once.I dont think its exciting. A. see B. have seen C. will see D. am seeing 2.(2016 上海，39） This medicine_ millions of peoples lives since it was put into use. A.is saving B. will save C. has saved D. had saved 3.(2016合肥高新区二模，43）Dont worry ! Your backpack alreadly _ and now you can take it and enjoy shopping with your classmates. _Thanks Mom. A.will clean B.has cleaned C.will be cleaned D.has been cleaned Homework:Homework: 1.Review The Present Perfect Tense. 2.Finish the exercises. 3.Preview the new lesson.