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1、现在完成时动词转换通常与时间副词just（刚刚）,already（已经）,before,yet（一般疑问：已经；否定句：还）never,ever等状语连用①Ihaveneverheardofthatbefore.②Haveyoueverriddenahorse?③Shehasalreadyfinishedthework.④Haveyoumilkedthecowyet?⑤I’vejustfinishedmyhomework.⑥Hehasnotcomeyet.2。表示过去已经开始，持续到现在的动作或状态，通常和for（段时间）,since
2、（点时间）引导的时间状语以及sofar,bynow,thesedays,inthelasttenyears等连用。Ihavebeenhereforjustovertwoyears.Ihaven’tseenherthesedays.ShehaslearntEnglishfor6years/since6yearsago.Theyhavelivedheresince1990.WhathashappenedtotheUSAinthelast50years?瞬间动词与延续性动词的转换come/go—be(in)leave—beawayborro
3、w—keepbuy—havedie—bedeadgettoknow—knowbegin/start—beongoout—beoffarrive–behere/theremarry/getmarried(to)—bemarried(to)fallasleep/gettosleep—beasleepjointheParty—beintheParty--beamemberofthePartygotoschool–beintheschoolcatch/getacold–haveacoldjointhearmy–beinthearmy--bea
4、soldier--beamemberofthearmygotoschool–beastudentfinish–beoverclose–beclosedopen–beopen√×××√×√√()()()()()()()()Ihaveboughtanewdictionaryforaweek.Ihavehadanewdictionaryforaweek.我买一本新词典已有一星期了。Theyhavecomeherefortwodays.Theyhavebeenherefortwodays.他们来这儿已经两天了。HehasjoinedtheLe
5、aguememberfortwoyears.HehasbeenaLeaguememberfortwoyears.他已入团两年了。Themanhasbeendeadforseveralyears.Themanhasdiedforseveralyears.这个人已经死了几年了。请判断haveto“不得不;必须”,+动词原形。例如:Mypenisbroken.Ihavetobuyanewone.我的钢笔坏了,我不得不买一支新的。haveto有人称、数和时态的变化,其第三人称单数形式为hasto,过去式为hadto。例如:Hismotheri
6、sill,sohehastostayathometolookafterher.他妈妈病了,他得呆在家里照顾她。Jacksaidhewassobusylastnightthathehadtoworktill11o’clock.含有haveto,hasto,hadto的句子需分别借助助动词do,does,did构成疑问句和否定句。例如:Joehastogohomenow.→DoesJoehavetogohomenow?→Joedoesn’thavetogohomenow.Joehastogohomenow,doesn’the?Putthe
7、followingsentencesintoEnglish.A:火车已经开走了.B:什么时候开走的?A:半个小时之前开走的.A:这本书我已经买了两年了.B:你在哪儿买的?A:在我老家买的.A:你看过这部电影吗?B:看过.A:什么时候看的.B:上周星期天看的.A:Thetrainhasleft.B:Whendiditleave.A:Itlefthalfanhourago.A:haveyouseenthefilm?B:Yes,Ihave.A:Whendidyouseeit?B:IsawitlastSunday.A:I`vehadthebo
8、okfortwoyears.B:Wheredidyoubuyit?A:Iboughtitinmyhometown.此课件下载可自行编辑修改，仅供参考！ 感谢您的支持，我们努力做得更好！谢谢
