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1、动词不定式TheInfinitive威海十中主讲人：杨蕾蕾撰稿人：苗升杨静动词不定式动词不定式在句子中用法灵活，作用很大，是中考中重要的考查项目之一，大家一定要学好吆！(一)动词不定式的基本形式（二）动词不定式的特征（三）动词不定式的运用肯定式：to+动词原形否定式：notto+动词原形(to是不定式符号，无意义，有时可以不带)基本形式onthewaytoschoolonthewaytoseeafilmIwanttoborrowadictionary.TurntoPage32.CouldIspeaktoMr.Smith,plea
2、se?Theybegantoreadandwrite.Heisusedtogettingupearly.Helpyourselftosomefish.Sheaskedmetospeakalittlelouder.自主探究to不定式or介词?不定式之前的to与介词to不同。介词to之后要跟名词、代词或相当于名词的短语作宾语；而不定式to之后必须跟动词原形。介词to:to+名词/代词/动名词不定式to:to+动词原形疑难解惑：动词不定式是一种非谓语动词的形式，它没有人称和数的变化。动词不定式和其后面的名词等构成不定式短语。动词不定式
3、的用法1.作主语2.作宾语3.作宾语补足语4.作状语5.作表语6.作定语7.和疑问词连用可以作句子的主语、宾语、表语等作主语特殊句型，todo作主语，常放句尾，用it作形式主语1.Itbeadj./n.todosth.It’sgoodtoseeyou.It'smyjobtoteachyou.Toteachyouismyjob.2.Ittakessb.sometimetodosth.Ittakesmeonehourtodomyhomework.1、Ittookthem1,000yuan_________thistable.(buy
4、)2、Itisdifficult_______math.(learn)3、_______istobelieve.(see)ToseetobuytolearnExercisesIwanttogohome.作宾语常用动词不定式作宾语的动词有：want,hope,love,like,learn,prefer,decide,agree,stop,forget,begin,start,hate,remember,goon,try等1、他想借用我的录音机。2、他们开始读。3、李琳喜欢玩什么？她喜欢踢足球。Hewantstoborrowmyr
5、adio.Theybegantoread.WhatdoesLiLinliketoplay?Shelikestoplaysoccer.Exercises不定式to:to+动词原形stoptodostopdoing停下来去做某事停止做某事goontodogoondoing继续做另一件事继续做原来在做的事remembertodorememberdoing记住要做某事记得曾经做过某事forgettodoforgetdoing忘记要做某事忘记曾经做过某事提示板V+todosth.V+doingsth.begin/start/hate/li
6、ke/love/plan/prefer意义相似意义不同forget/remember/goon/stop/try1、我记得以前见过你。2、离开时请记得关灯。Irememberseeingyou.Remembertoturnoffthelightwhenyouleave.Itellhimnottogotherebybus.作宾语补足语常用动词不定式作宾语补足语的动词有：tell,ask,want,order,teach,invite,wish,help,get等注：若后面跟两个并列的不定式的话，后面一个的to可以省略。Ihelpm
7、ymumtodothedishesandcleanthewindows.常见动词有：使役动词:let,make,have感官动词:see,watch,hear,feel,listento作宾语补足语不带to的情况：一感feel二听hear,listento三让make,let,have四看lookat,see,watch,noticeLetmedoit.若要变成被动语态，to要加上：Theyaremadetoworkfor16hoursadaybytheboss.Exercises2.Youmustwatchmecarefull
8、y_____(do)everything.do3.Shewasheard________(sing)inthenextroom.1.Mymotheraskedme________(wash)clothes.towashtosing小结1.作主语Toteachyo
