动词不定式肯定：to+V.原或者(to)+V.原否定：not/+(to)+V.原1)Helikestoreadnovels.2)Wedecidednottobuythathouse.4)Itisinterestingtoflyakite.动词不定式的结构作主语Tohearyourvoiceissonice.Tostudyhardisveryimportant.Itissonicetohearyourvoice.Itisveryimportanttostudyhard.不定式作主语时，通常用it作形式主语，把真正的主语放在后面。注意:1、Itis+adj.for/ofsb.todosth.It+be+adj.+for/ofsb.todosth.for:adj.多为描述不定式行为的特征（important/necessary/interesting等.）of:adj.多为描述主语的品质特征（kind/nice/friendly/wise/foolish等.）作主语Itiseasy_______hertolearnEnglishwell.Itisclever________youtosolvetheproblem.offor2、Ittakessb.sometimetodosth.Ittakesmethreehourstofinishthehomeworkeveryday.作主语我每天花去三个小时完成家庭作业。Ispendthreehoursfinishingthehomeworkeveryday.1、Itisnecessary______ustolearntowait.(of/for)2、Itwascareless______metobreakthecup.（of/for)3、Ittookthem1,000yuan_________thistable.(buy)4、Itismypleasure_________theboxforyou.(carry)tobuyforoftocarry练习1、动词+todosth.常用动词有：want/wish/like/wouldlike/hope/plan/try/decide/learn/need/agree/begin/start/forget/remember/manage/seem/fail/manage/promise等1、Ihopetofinishittomorrow.2、Sheplanstogoandteachinthecountry.作宾语2、动词＋疑问词+todoIdon’tknow____________next.Shecan’tdecide_________________.作宾语2、她不能决定买哪本书。1、我不知道接下来该做什么。whattodowhichbooktobuy=Shecan’tdecidewhichbooksheshouldbuy.1、动词+宾语（sb./sth.)+todosth.1、Theteacheraskedhertoanswerthequestion.2、Thedoctortoldmetohaveagoodrest.作宾补-对宾语进行补充说明常用动词有：ask,tell,allow,want等动词多为感官动词、使动词。一感：feel二听：hear,listento三使：make,let,have三看：see,notice,watchJohn’smothermakeshimplaythepianoeveryday.被动：John_________playthepianoeveryday.ismadeto2、动词+宾语+不带to的不定式1、主语+be+todosth主语多为duty/wish/hope/idea/plan/ambition/dream/work/job等名词1、Mydreamistobeasinger.2、Hisworkistocleantheclassroomeveryday.作表语我的梦想是成为一名歌手。他的工作是每天清扫教室。放在被修饰词的后面Ihavealotofworktodo.Iwanttofindsomethingtodrink.作定语不定式为不及物动词时后面应有必要的介词。I’mlookingforahotel_________.A.stayB.stayatC.tostayD.tostayatD位置：Hehasn’tgotahousetolive_____.Ihavenopenstowrite_______.inwith1、原因状语:主语+be+adj.(表情感)+todosth.(happy/gladangry/sorry/sad/afraid等)I’msorrytohearthat.作状语I’mgladtoseeyou.2、目的状语Thesoldierranintotheroomtosavethegirl._________thesoldierrunintotheroom?WhydidManyparentssendtheirchildrenabroad___________________.(深造学习)tofurthertheirstudies3、结果状语too+adj./adv.+todosth.adj./adv.enoughtodosth.Youaretooyoungtodothisjob.Heranfastenoughtocatchthebus.
