人教版初中英语动词不定式精讲课件

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.动词不定式的构造作主语Itissonicetohearyourvoice.Itisveryimportanttostudyhard.不定式作主语时，一般用it作形式主语，把真正的主语放在背面。注意:不定式做主语谓语动词用单数Tohearyourvoiceissonice.Tostudyhardisveryimportant.It+be+adj.+for/ofsb.todosth.for:形容词为描述不定式行为的特征（important/necessary/interesting等）of:形容多为描述主语的品质特征（kind/nice/friendly/wise/foolish等.）Itiseasy_______hertolearnEnglishwell.Itisclever________youtosolvetheproblem.offor2.Ittakes/tooksb.sometimetodosth.Ittakesmethreehourstofinishthehomeworkeveryday.我每天花去三个小时完毕家庭作业。Ispendthreehoursfinishingthehomeworkeveryday.3.Itis+n.(forsb)todosth.ItismypleasuretohelpyouwithyourEnglish.4、用在谚语中

Toseeistobelieve.Tosayiseasy,buttodoishard.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_________________________6.

Towastetimeistoshortenlife.（翻译成中文）tocleantheclassroom.挥霍时间就是缩短生命。1.动词+todosth.常用动词有:want/wish/hope/plan/decide/learn/need/agree/begin/start/manage/seem/fail/manage/promise/refuse/pretend等1.Ihopetofinishittomorrow.2.Sheplanstogoandteachinthecountry.作宾语决定学习(有)希望，设法拒绝想假装主动答应选计划，同意祈求帮一帮2.动词＋疑问词+todo

(2).她不能决定买哪本书。(1).我不懂得接下来该做什么。whattodowhichbooktobuy=Shecan’tdecidewhichbooksheshouldbuy.Idon’tknow____________next.Shecan’tdecide_________________.=Idon’tknowwhatIshoulddonext.3.主语+谓语+it+adj./n.+todo常见的谓语动词:find,think,consider,feel,make等e.g.Thedustyairmakesitdifficulttogetaclearpictureofspace.大气中的尘埃使人难以获取太空的清楚图像。我觉得学好英语很主要。IthinkitimportanttolearnEnglishwell.1.Don’tforget_______________.(关灯)2.Ihappened________whenhecalledme.(出去)3.Idon’twant________________.(依赖别人)4.Samislearning_______________.(怎样开车）5.Wepromise_________theenvironment.(保护)toturnoffthelighttogoouttodependonothershowtodriveacar练习toprotect1.动词+宾语(sb./sth.)+todosth.作宾补e.g.Sheaskedmetohelpher.Theteachertoldhimtocomeontime.Edison’smothertaughthimtoreadandwrite.

常用的动词有：ask,allow,advise,wanttell,order,teach,expect等动词多为感官动词,使役动词。一感:feel(感觉)二听:hear(听见),listento(听)三使:make(使),let(让),have(使)四看:see(看见),notice(注意到),watch(看),lookat(看)半帮助：help后既能够带to,也能够不带toJohn’smothermakeshimplaythepianoeveryday.变被动时省略的不定式符号to要还原回来：hearsbdosbbeheardtodosthJohn_________playthepianoeveryday.ismadeto2.动词+宾语+不带to的不定式注意:1.Lethim_______theworkatonce.(finish/tofinish)2.

Doyoulikelisteningtootherpeople_____?(talk/talking/totalk)3.

Jimwasseen_________theroom.(enter/toenter)4.

Pleasetellher_________hereontime.(come/tocome)finishtalktoentertocome练习5.I’llhelpyou_________thisproblem.(tosolve/solve)6.Iwishyouwillstaywithus.(改成简朴句）7.Herstorymadeuslaugh.(改成被动句）(to)solveIwishyoutostaywithus.Weweremadetolaughbyherstory.1.主语+be+todosth

主语多为duty/wish/hope/idea/plan/ambition/dream/work/job等名词。Hisworkistocleantheclassroomeveryday.作表语他的工作是每天打扫教室。我的梦想是成为一名歌手。Myambitionistobeasinger.2、谚语中1、Toknoweverythingistoknownothing.2、Toseeistobelieve.放在被修饰词的背面Ihavealotofworktodo.Iwanttofindsomethingtodrink.作定语不定式为不及物动词时背面应有必要的介词。I’mlookingforahotel_____.A.stayB.stayatC.tostayD.tostayatD位置：Hehasn’tgotahousetolive______.in

Ihavenopenstowrite_______.withHeboughtatoytoplay______.with1.原因状语:

主语+be+adj.(表情感)+todosth.

(happy/glad/angry/sorry/sad/afraid等)e.g.I’msorrytohearthat.作状语I’mgladtoseeyou.2.目的状语

Thesoldierranintotheroomtosavethegirl

.Tomwenttotheairporttomeethisgrandpa.3.成果状语too+adj./adv.+todosth.adj./adv.enoughtodosth.Youaretooyoungtodothisjob.Heranfastenoughtocatchthebus.动词不定式能够充当的句子成份1、作主语2、作宾语3、作宾语补足语4、作表语5、作定语6、作状语1).AllIdidwastogivehimsomeadvice.

2).Hisdreamistotravelallovertheworld.

3).Lucyneedsafriendtoplaywith.4).Hewasthelastguesttoarrive.5).It’sinterestingtoreadasciencefiction.

下列不定式作何种成份？（表语）（表语）（定语）（定语）（主语）Hewasgladtoseeyou.

Myfatherofferedtobuyacomputerforme.

HeintervieweddetectiveKentogetsomeinformation.

Thedoctoraskedhimtohavemorefruitandvegetables.（状语）（宾语）（状语）（宾语补足语）下列不定式作何种成份？1.习惯于beusedto_______被用于beusedto_______Waterisusedto_____(put)outfires.Iamusedto_______(take)awalkaftersupper.2.prefer…to…比起……来更喜欢比起游泳来，我更喜欢跑步。Iprefer________to___________.3.lookforwardto期待，期望I’mlookingforwardto_______(visit)Beijingagain.介词to

与不定式to

的区别puttakingrunningswimmingvisitingdodoing1.forgettodosthforgetdoingsth2.remembertodosthrememberdoingsth3.regrettodosthregretdoingsth4.trytodosthtrydoingsth5.love/liketodosthlove/likedoingsth6.meantodosth:打算，想要做某事meandoingsth:意味着7.stoptodosthstopdoingsth8.begintodosth:开始去做某事begindoingsth:开始做某事9.can’thelptodosth:不能帮助做..can’thelpdoingsth:忍不住做某事10.Prefertodosthratherthandosth:

宁愿做某事而不愿做某事Exercises1.--You’vedoneverywellthistime. --It’sreallykind______. A.foryoutosaysoB.foryousayingso C.ofyoutosaysoD.ofyousayingso2.Itisbettertoloseone’slifethan____. A.ifyouloseyourspirit B.losinghisspirit C.toloseone’sspirit D.yourspiritgettinglostCC3.–Ican’tworkinthisway. --Whynot____itinsomeotherway? A.trytodo B.trydoing C.tryingtodo D.tryingdoing4.Sinceyoufinditdifficult____adecision,you’dbetteradiscu