动词不定式用法讲解

动词不定式用法讲解动词不定式用法讲解动词不定式用法讲解V:1.0精细整理，仅供参考动词不定式用法讲解日期：20xx年X月动词不定式的用法讲解一、动词不定式：构成：to+动词原形（to只是不定式符号，没有意义）动词不定式作主语较长时，常用it作形式主语，而将真正的主语放在句末。+is/was+形容词+(forsb.)+动词不定式TolearnEnglishwellisuseful.=It’susefultolearnEnglishwell.学好英语是有用的。Toprotectenvironmentisimportantforus.=It’simportantforustoprotectenvironment.对于我们来说保护环境是很重要的。2.Itis/was+kind/good/nice/clever+ofsb.+动词不定式It’sverykindofyoutohelpme.你帮助我真是太好啦。It’sverycleverofyoutodolikethat.你那样做真的太聪明啦。3.Ittakes(took,willtake)sb.sometimetodosomething.(做某事花费某人…时间)isagoodideatodosth.作宾语1.常见的跟不定式作宾语的动词有：wanttodosth.decidetodosth.hopetodosth.plantodosth.offertodosth.agreetodosth.learntodosthtrytodosthprefertodosthpromisetodosth.needtodosth.expecttodosth.2.主语+find/think+it+形容词+(forsb.)+todoIfinditeasytoreadEnglisheveryday.我发现每天读英语和容易的。Hefeltithardtosleep.他觉得很难入睡。IthinkitveryinterestingtolearnEnglish.我认为学英语很有趣。Wefounditimpossibletocrosstheriver.我们发现过河是不可能的。3.特殊疑问词+动词不定式作宾语CanyoutellmehowtogettothepostofficeIdidn’tknowwhattodonext.动词不定式作宾语补足语：asksbtodosth.tellsbtodosth.invitesbtodosthwantsbtodosthwishsbtodosthordersbtodosthadvisesbtodosthallowsbtodosthwaitforsbtodosthThequestionisdifficulttoanswer.这个问题很难回答Theroomiscomfortabletolivein.这个房间住起来很舒服Heiseasytogetalongwith.他很容易相处I’mgladtoseeyouagain.很高兴再次见到你Shetoldmetobuyaticket.她让我去买张票2.要省去to.注意:宾语补足语：补充说明宾语的。宾语和宾补之间有逻辑的主谓关系。Hetoldmetoleaveatonce.Hemadethebabylaugh.跟省to的不定式的动词(感使动词)：一感feel二听listento,hear三使make,let,have四看lookat,watch,see,notice五半帮助helpTheteachershelpedthestudents(to)learnEnglishwell.那些老师帮助学生学好英语。Heoftenhelpshismother(to)tidyuptheroom.他经常帮助他妈妈整理房间。作表语，表示主语的“职业、职责或性质”Herjobistocleanthehall.她的工作就是打扫大厅。Mydreamistobeateacher.我的梦想是当一名教师。作定语动词不定式修饰名词或代词，起形容词的作用，在句中作定语，特点：①.要放在被修饰的名词或代词之后。Ihavealotofbookstoread.Wouldyoulikesomethingtoeat作状语Heworkeddayandnighttogetthemoney.（表目的）他日夜工作来赚钱。(too...to...,和...adj/advenoughtodosth)（表结果）Sheistooyoungtogotoschool.Sheisn'toldenoughtogotoschool.Theywereverysadtohearthenews.（表原因）听到这个消息他们非常伤心。Thequestionissimpleforhimtoanswer.（表程度）这个问题对他来说太容易回答了。不定式的否定式是在不定式前加notTheytoldusnottoplaybasketballtoolong.Youhadbetternotgotobedlate.动词不定式练习came________(give)usatalkyesterday.isalwaysthelast______(come).promised________(attend)themeeting.wasluckyenough_______(find)aseat.Mingwastooexcited______(say)aword.bossmadethem__(work)thewholenight.jobis_____(look)aftertheanimalsinthezoo.dreamis_____(fly)tothemoononeday.’skind______you_______me.,helping,tohelp,helping,tohelp’shard_____(of,for)us_____(learn)Englishwell.tried______(notmake)anynoise.need_______(practise)speakingmoreEnglish.don’tknowhow______(use)thewashingmachine.youwanttogetsomething______(eat)isnomoreroom______(live)in.teacheroftentellsme______(listen)carefullyinclass.oftenseeMary_______(help)othersonherwayhome.teacherasksus_____(write)downthenewwords.Marydancesbestinourschool.---Iagree.I’llneverforget______herdanceforthefir