动词不定式》PPT课件

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1、动词不定式肯定：to+V.原或者(to)+V.原否定：not/never+(to)+V.原Helikestoreadnovels.Isawhimcome.Wedecidednottobuythathouse.4)Itisinterestingtoflyakite.5)Pleaselethimnotgothere.动词不定式的结构作主语Tohearyourvoiceissonice.Tostudyhardisveryimportant.Itissonicetohearyourvoice.Itisveryimportanttost

2、udyhard.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.不定式做主语谓语动词用单数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.Itisclev

3、er________youtosolvetheproblem.offor2、Ittakessb.sometimetodosth.Ittakesmethreehourstofinishthehomeworkeveryday.作主语我每天花去三个小时完成家庭作业。Ispendthreehoursfinishingthehomeworkeveryday.3、Itis+n.(forsb)todosth.ItismypleasuretohelpyouwithyourEnglish.作主语4、用在谚语中Toseeistobelieve.T

4、osayiseasy,buttodoishard.作主语1、Itisnecessary______ustolearntowait.(of/for)2、Itwascareless______metobreakthecup.（of/for)3、Ittookthem1,000yuan_________thistable.(buy)4、Itismypleasure_________theboxforyou.(carry)tobuyforoftocarry练习5、轮到我们打扫教室了。Itisourturn________________

5、_________6、Towastetimeistoshortenlife.（翻译成中文）tocleantheclassroom.浪费时间就是缩短生命。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、Sheplanstogoandtea

6、chinthecountry.作宾语决定学习(有)希望，设法拒绝想假装主动答应选计划，同意请求帮一帮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.3、主语+谓语+it+adj./n.+todo作宾语常见的谓语动词：find,think,consider,fe

7、el,make等Thedustyairmakesitdifficulttogetaclearpictureofspace.大气中的尘埃使人难以获取太空的清晰图像。我认为学好英语很重要IthinkitimportanttolearnEnglishwell.1、Don’tforget_________________.(关灯)2、Ihappened________whenhecalledme.（出去）3、Idon’twant________________.(依赖别人）4、Samislearning________________

8、.(怎样开车）5、Wepromise__________theenvironment.(保护)toturnoffthelighttogoouttodependonothershowtodriveacar练习toprotect1、动词+宾语（sb./sth.)+todosth.