英语语法.动词不定式.ppt

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1、动词不定式的基本形式是“to+动词原形“，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。在句中可以作主语、表语、宾语、宾语补足语、定语和状语。用法：用作宾语(v.+todo)Iwanttobuyacomputer.Shehopestofindabetterjob.Iwishtogowithyou.needtodolearntodoagreetodoplantododecidetodorefusetodobegintodostarttodotrytodoforgettodoremembe

2、rtodoliketodoStoptodogoontodoSheaskedmetohelpher.Theteachertoldhimtocomeontime.Edison’smothertaughthimtoreadandwrite.wantsbtodowishsbtodogetsbtodoordersbtodofindsbtobelikesbtodowouldlikesbtodohelpsbtodo常见动词有：一感：feel二听：listento,hear三让:let,make,have四看:see,lo

3、okat,watch,notice比较：Isawhercrossingthestreet.Isawhercrossthestreet.Iwenttheretoseemyteacher.ShecamebacktogetherEnglishbook.Theboxwastooheavytomove.(目的)(目的)（结果）4.用作主语1.Tobeanactressismydream.2.Togoabroadishisdream.3.Tosayiseasy,todoisdifficult.（这时可将其用形式主语it

4、来替换）Itismydreamtobeanactress.Itishisdreamtogoabroad.Itiseasytosay,itisdifficulttodo.It’s+adj+ofsb+todosth.Eg:你能邀请我，你真是太善良了。It’sverykindofyoutoinvitme.若形容词是描述人的性格、品质的，如kind，good，nice，right，wrong，clever，careless，polite，foolish等，用ofsb.Eg:你真聪明，解出了这道数学题。It’scle

5、verofyoutoworkoutthemathsproblem.It’s+adj+forsb+todosth.若形容词是描述事物的性质，用forsb.这类形容词有difficult，easy，hard，important，dangerous，（im）possible等。Eg:对孩子们来说，穿过繁忙的街道很危险。It’sverydangerousforchildrentocrossthebusystreet.Eg:对我们来说，完成这项工作很困难。It’sdifficultforustofinishthewo

6、rk.5.用作表语Hisworkistofeedtheanimals.Herjobistolookafterthepatients.Mywishistobeascientist.6.用作定语Givemesomethingtodrink.Theyhavemuchfoodtoeat.（这时不定式与被修饰词有动宾关系。若是不及物动词，介词不能省略）Heaskedforaroomtolivein.Idon’thaveapentowritewith.7.疑问词who,what,which,where,when,how

7、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.Idon’tknowwhattodo.Hecantellyouwheretogetthebook.Thequestioniswho(m)toask.(主语)(宾语)(宾语补足语)(表语)Idon’tknowwhattodo.Idon’tknowhowtodoit.Idon’tknowwhattodoaboutit.Ittakesyoutenminutestogetthere.Ih

8、opetoseehimsoon.Hiswishistobecomeanartist.Peopleeattolive,butnotlivetoeat.Ihavealottotellyou.It’snotrighttobealwaysthinkingofoneself.Weoftenseehimplayfootball.定语主语状语表语宾语主语宾语补足语跳舞非常有趣。种些植物是非常有必要的。说英语对我来说并不容易。听