初中英语 现在完成时课件 精讲

ByMikeChenA:WouldyouliketovisittheGreatWall?B:Thankyou.ButIhavevisitedit.AndDaminghasvisitedit,too.A:WouldyouliketovisittheGreatWall?B:Thankyou.ButI…it.AndDaming…it,too.A:Wouldyouliketowatchthemoviewithme?B:I’dliketo,butIhavewatchedit.AndTonyhaswatchedit,too.A:Wouldyouliketowatchthemoviewithme?B:I’dliketo,butI…it.AndTony…it,too.A:Tom,whydon’tyoudoyourhomework?B:Ihavefinishedmyhomework.andmysisterhasfinishedherhomework,too.A:Tom,whydon’tyoudoyourhomework?B:I…myhomework.andmysister…herhomework,too.CanIborrowyourstorybook?Sorry,that’sSam’s.IhavereturnedittoSam.CanIborrowyourstorybook?Sorry,that’sSam’s.I…ittoSam.A:WouldyouliketovisittheGreatWall?B:Thankyou.ButIhavevisitedit.AndDaminghasvisitedit,too.A:Tom,whydon’tyoudoyourhomework?B:Ihavefinishedmyhomework.andmysisterhasfinishedherhomework,too.1.现在完成时是怎样构成的？主语＋have/has+过去分词＋…。1.过去分词是怎么回事？过去分词(pp)其变化方法和动词过去式基本相同。即：在动词后+edlive---lived---lived有一部分动词的过去式和过去分词形式不同，需要记牢。write-wrote-writtengo-went-gonesee-saw-seengive-gave-given2.什么情况下使用has?主语是第三人称单数时，使用has.Hehasfinishedhishomework.Shehasgonehome.Daminghasseenthefilm.Myfatherhashaddinner.其他情况下使用haveIhave…Youhave…Wehave…Theyhave…3.have或has在结构中有意思吗？在现在完成时态中，have或has是助动词，无意义。Doyoulikemusic?但是，我们可以给他虚拟一个意思“已经”。Ihavefinishedmyhomework.IhavevisitedtheGreatWall.4.现在完成时态的句子在翻译成汉语时有什么特征？“已经……”“……过”5.缩写形式Ihave…Youhave…Wehave…Theyhave…Hehas…Shehas…=I’ve…=You’ve…=We’ve…=They’ve…=He’s…=She’s…Ihavefinishedmyhomework.I’vefinishedmyhomework.Theyhavecomeback.They’vecomeback.Hehasfinishedhishomework.He’sfinishedhishomework.Shehasgonehome.She’sgonehome1.现在完成时是怎样构成的？2.什么情况下使用has?3.have或has在结构中有意思吗？4.现在完成时态的句子在翻译成汉语时有什么特征？小结5.缩写形式A:IhavevisitedtheGreatWall.haveyouvisitedtheGreatWall?B:Yes,Ihave.No,Ihaven’t.No,Ihaven’tvisitedtheGreatWall.Hehasfinishedhishomework.Hashefinishedhishomework?Yes,hehas./No,hehasn’t否定句和一般疑问句的形式Groupwork讨论：现在完成时态的否定句和一般疑问句是怎样构成的？Icleanmyroom.TheyarriveinBeijing.ShevisitChina.Bettyreadthebook.Wewatertheflowers.Pairwork用现在完成时表达下列句子现在完成时和一般过去时的区别IvisitedtheparklastSunday.Ihavevisitedthepark.Hefinishedhishomeworktenminutesago.Hehasfinishedhishomework.一般过去时既强调发生的动作也强调动作的发生时间。现在完成时仅强调有过这样的经历或已经完成某事，但不强调发生的时间。1.现在完成时是怎样构成的？2.什么情况下使用has?3.have或has在结构中有意思吗？4.现在完成时态的句子在翻译成汉语时有什么特征？小结5.缩写形式6.否定句和一般疑问句的形式7.现在完成时和一般过去时的区别