动词不定式精品课件.ppt

,TheInfinitive,动词不定式,动词不定式的构成：,(not)to+do(动词原形),Ato-infinitivecanbeusedas,主语（Subject）表语（Predicative）宾语（Object）宾补（Objectcomplement）定语（Attributive）状语（Adverbial）,不定式用作主语,Togrowtreesisveryimportant.,Itisveryimportanttogrowtrees.,不定式作主语时,往往放在谓语之后,用it作形式主语。,Sayinanotherway,usingit.Tolearnfromyourfriendsisimportant.Toleavewithoutsayinggoodbyeisimpolite.TochatwithMissWhiteisapleasantthing.Towalktoschooltakesmetenminutes.,Itisimportanttolearnfromyourfriends.Itisimpolitetoleavewithoutsayinggoodbye.ItisapleasantthingtochatwithMissWhite.Ittakesmetenminutestowalktoschool.,Itis+adj.+forsb.todosb.isare+adj.+todo,Itis+adj.+ofsb.todo=sb.isare+adj.+todo,你那样做是有礼貌的。,Itispoliteofyoutodothat.,=Youarepolitetodothat.,(good,kind,nice,rude,clever,right,silly,thoughtful,brave,selfish),(easy,hard,difficult,important,possible,necessary),对他来说，说英语很容易。对我们来说，努力学习是必要的。您能帮助我，真是太好了。,ItiseasyforhimtospeakEnglish.,Itisnecessaryforustostudyhard.,Itisverykindofyoutohelpme.,不定式放在be动词后面，用作表语,Mydreamistobeagoodteacher.,Itsworkistocleantheroomeveryday.,Completethefollowingsentences.1.Thedoctorssuggestionis_(take)moreexercise.2.Thebestwayis_(talk)toyourparents.3.Hisplanis_(今年夏天到北京旅游).4.Mypurposeis_(帮你解决这个问题).,totake,totalk,totraveltoBeijingthissummer,tohelpyousolvethisproblem,不定式放在及物动词后，用作宾语,WebegintoreadEnglishat6:30a.m.,Sheforgottoclosethedoor.,常用动词不定式作宾语的动词有：want,plan,hope,wish,learn,decide,wouldlike,begin,start,try,need,forget,choose,prepare,agree,promise,manage,encourage,Completethefollowingsentences.1.I_(希望收到来信)yousoon.2.John_(不想当)thehostofthecharityshow.3.Theyre_(试着解决)theproblembyhimself.4.Millionsofpeople_(已学会使用)computers.,hopetohearfrom,doesntwanttobe,tryingtosolve,havelearnedtouse,think/find/consider+it+adj.+todo,动词不定式作宾语的注意事项（）,不定式作宾语时，如带有宾语补足语，则要把不定式放到后面，用it作形式宾语，构成“主语+动词+it+宾补（形容词、名词）+不定式”结构。如：Ifounditnecessarytotalktohimagain.IfounditimportanttolearnEnglish.,动词不定式作宾语的注意事项（）,有些动词既可跟不定式作宾语，也可跟动名词作宾语，但含义不同：forgettodosth.忘记要做某事forgetdoingsth.忘记曾经做过某事stoptodosth.停下来去做某事stopdoingsth.停止做某事goontodosth.继续做另一件事goondoingsth.继续做原来在做的事needtodosth.需要做某事needdoingsth.需要被做,1.别忘了离开时把灯关了。Dontforgetbeforeleaving.2.父亲必须戒烟了。Fathermuststop.3.他看完电视后，继续看了一会书。AfterhewatchedTV,hewentonforawhile.4.这辆自行车需要修理了。Thisbikeneeds_.,toturnoffthelights,smoking,toread,repairing/mending,不定式用作宾语补足语,SheaskedmenottowatchTV.,Lucytoldhimnottocry.,Tellhertoturnitdown.,ask,tell,want,need,wish,warn,advise,encourage,invite,expect,teach,wouldlike,hopesb.todosth.,wish,Completethefollowingsentences.1.MrLu_(要求我们交)ourhomeworkontime.2.Thedoctor_(建议格林先生喝)morewater.3.MrWu_(叫学生别嚷嚷)inclass.4.MrsRead_(希望儿子学)Englishwell.,asksustohandinadvisedMrGreentodrinktellsthestudentsnottoshoutwisheshersontolearn,四看,三使,二听,一感觉:feel,不定式作宾补省去to的情况(在被动语态中则to不能省掉),help可带to，也可不带tohelpsb(to)dosth,hearlistento,letmakehave,seewatchlookatnotice,hadbetterdosth./notdosth.Whynotdosth?Wouldyoupleasedosth.?Wouldratherdothandosth.,不定式作宾补省去to的情况(在被动语态中则to不能省掉),1.JohnwasmadethecarforaweekasapunishmentA.towashB.washingC.washD.tobewashing2.Thepatientwaswarnedfoodaftertheoperation.A.toeatnotB.eatingnotC.nottoeatD.noteating3.Internetbarsmustntletanybodybadthings,especiallychildren.A.watchB.towatchC.watchingD.watches,A,C,A,Exercises:,感官动词(feel,listento,hear,see,watch,lookat,notice)后既可跟不带to的不定式作宾补，也可跟v-ing作宾补.前者表示动作的全部过程已结束；后者表示动作正在进行。Ioftenhearhersinginthenextroom.Iheardhersinginginherroomjustnow.,不定式用作定语不定式作定语时，应放在被修饰词的后面。,Wehavealotofhomeworktodo.,如果不定式中的动词是不及物动词,则不定式中要有介词.Heislookingforaroomtolivein.Thereisnothingtoworryabout.,something,anything,nothing+adj.+todoIhavesomethinginterestingtotellyou.,Findtheto-infinitiveineachsentence.1.MrWuisalwaysthefirsttocomeandthelasttoleave.2.Thereisnoneedtotroublehim.3.Haveyougotanythingimportanttotellme?4.Ivegotnothingtoworryabout.5.Imthirsty.Givemesomethingtodrink.6.Springisthebestseasontoplanttrees.7.Weallhaveachancetogotocollege.,不定式用作状语,etodosth.2.gotodosth.3.stoptodosth.4.inorder(not)todo5.too+adj.+todosth.6.adj.adv.+enoughtodosth.,Completesomesentences:1、_(为了提高英语成绩),TomgoestotheEnglishcornereveryday.2、Iwas_(太累了，难于入睡。)3、Sheranfast_(为了赶上早班车).4、Heis_(富有得可以买辆小汽车).,InordertoimprovehisEnglish,tootiredtofallasleep.,tocatchthefirstbus,richenoughtobuyacar.,疑问词+不定式,不定式与疑问词who,which,when,how,what,where等连用，在句中起名词作用，可充当主语、表语、宾语等。,在与why连用时，只用于why或whynot开头的简短疑问句中，后面紧跟的动词不定式不带to。Whynothavearest?,Completethefollowingsentences.1.Hedidntknow.(说什么)。2.isveryimportant.(如何解决这个问题)3.Myquestionis.(什么时候开始)。4.Pleaseshowus.(如何使用计算机)5.Idontknowforyou(买什么东西).,whattosay,Howtosolvetheproblem,whentostart,howtousethecomputer,whattobuy,用作介词的to(to+名词/动名词)lookforwardtohearingfromyoubeusedtogettingupearlydevotehimselftohelpingpoorchildrenpayattentiontoyourspellingpreferwatchingTVtodoinghomework,Completethefollowingsentences.1.Wealllookforwardto(hear)thegoodnews.2.He.(宁愿呆在家里也不愿去看电影)3.YinXuemeidevotedallherlifeto.(teach)4.Father(习惯于看报)aftersupper.5.Ifsomeonelaughsatyou,youshould.(不理睬),hearing,prefersstayingathometogoingtothecinema,teaching,isusedtoreadingnewspapers,paynoattentiontohim,Itstimetodosth.Ittakestimemoneytodosth.betoo+adj.+todosth.be+adj.+enough+todosth.hadbetter+(not)dosth.Whynotdosth.?prefer+A/doingA+to+B/doingBprefertodosth.wouldratherdoAthan(do)Bwouldrather(not)dosth.WillWouldyouplease(not)dosth.?bereadytodosth.13.beafraidtodosth.14.Its+adj.+(for/ofsb.)todosth.15.Idlike/lovetodosth.,固定句型,Exercises,Mylovelyson,ChenYinanisaGrade2student.Helovesallkindsofsports.LastSunday,hewenttoflykiteswithhisfriends.Whenhesawthekites(fly)highlyinthesky,hecouldntstop(jump).ThisSunday,heplans(play)footballwithhisfather.Hisdreamis(be)aPEteacherbecausehecanplayallthetime.Healsolikes(watch)TVand(play)computergames.(protect)hiseyes,Ioftentellhim(n