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1、Module9动词不定式学习重点难点能够运用不定式作主语,定语,状语以及不定式的否定形式。学具准备多媒体录音机学习课内探究一.什么是动词不定式?主要行为动词后面的动词都采用了“to+动词原形”的结构,我们把这种结构称为动词不定式(有时可以不带to)。动词不定式没有人称和数的变化,在句子中不能作谓语。下面我们一起来看一下动词不定式有哪些语法功能。二.动词不定式的语法功能:1.不定式作主语不定式作主语时,常用it作形式主语,而将作主语的不定式放在句子后部。eg.Itisgoodtohelpothers.帮助他人是件好事。Itisexcitingtosu
2、rftheInternet.上网是件令人兴奋的事。It’s+(clever,wise,kind,good,right,nice,wrong,bad,cruelsilly,stupid,foolish,careful,careless)+(of+sb.)+todosth.It’s+difficult,hard,easy,possible,impossible,important+(for+sb.)+todosth.2.不定式作宾语学习不定式作宾语时,要注意掌握后接不定式作宾语的动词。常见动词有:want,hope,wish,like,begin,tr
3、y,need,forget,agree,help等。Manypeopledecidenottothinkaboutit.许多人决定不去想这件事。Iwanttogotothelibrary.我想去图书馆。needtodolearntodoagreetodoplantododecidetodorefusetodobegintodostarttodotrytodoforgettodoremembertodoliketodoStoptodogoontodo3.不定式作定语不定式修饰名词或代词,起形容词的作用,在句中作定语,放在被修饰对象的后面,Ihavea
4、lotofhomeworktodo.我有很多作业要做。I’mhungry.Givemesomethingtoeat,please.我饿了,请给我点吃的吧。4.不定式作状语不定式常常作目的状语、原因状语、结果状语等。不定式作状语时,要注意不定式的逻辑主语应与句子的主语保持一致。HecametoshowmehisnewCDplayer.(目的)Iwenttheretoseemyteacher.(目的)ShecamebacktogetherEnglishbook.(目的)Theboywastoofrightenedtomove.(结果)5.不定式作补语(
5、v.+sb.+todo)4Module9动词不定式过程不定式可以作补语,如:Shetoldmetobuyaticket.她让我去买张票。Sheaskedmetohelpher.Theteachertoldhimtocomeontime.Edison’smothertaughthimtoreadandwrite.wantsb.todowishsb.todogetsb.todoordersb.todofindsb.tobelikesb.todowouldlikesb.todohelpsb.todo作宾语补足语不带to的情况:Letmedoit.Isaw
6、himcrossthestreet.常见动词有:使役动词:let,make,have感官动词:see,watch,hear,feel,listento比较:Iheardhersinginginthenextroom.Iheardhersinginthenextroom.6.不定式作表语不定式还可以作表语,如:Ourdutytodayistocleanthefloor.今天我们的任务是打扫地板。Hisworkistofeedtheanimals.Herjobistolookafterthepatients.Mywishistobeascientist
7、.7.疑问词who,what,which,where,when,how加todo可构成不定式短语,在句中可用作主语、宾语、宾语补足语、表语等。Whentostarthasnotbeendecided.(主语)Idon’tknowwhattodo.(宾语)Hecantellyouwheretogetthebook.(宾语补足语)Thequestioniswho(m)toask.(表语)8.(think,make,find,feel)+it+adj./n+todosth.(形式宾语)e.g.IfounditveryimportanttolearnEng
8、lishwell.=Ifoundthat_________________veryimportanttolearnEngl