初中英语动词不定式十大考点解析动词不定式是动词的一种非谓语形式，没有人称和数的变化，不能单独作句子的谓语。其构成形式为"to+动词原形"，to为动词不定式的符号，本身无意义。一、动词不定式作主语Tolearnfromyourfriendsisimportant.=Itisimportanttolearnfromyourfriends.Toleavewithoutsayinggoodbyeisimpolite.=Itisimpolitetoleavewithoutsayinggoodbye.Towalktoschooltakesmetenminutes.=Ittakesmetenminutestowalktoschool.动词不定式作主语时，可以直接放在谓语动词前面的主语位置，也可以用先行词it作形式主语，而将真正的主语(不定式)置于后面。常见的句式有：(1)Itis+形容词(ofsb)todosth.(2)Itis+名词(forsb)todosth.(3)Ittakessbsometimetodosth.(4)Itis+形容词(forsb)todosth.句式(1)中常用nice，kind，clever，good，right，wrong，foolish，careless等形容词，与介词of搭配，这些形容词常表述不定式逻辑主语的属性或性质;句式(4)中常用hard，difficult，easy，important等形容词，与介词for搭配，表示不定式表示的动作、行为的性质。1.It'sourduty_________theroomeveryday.A.tocleanB.cleanedC.cleanD.cleans(甘肃省)2.It'shardforus_________Englishwell.A.learnB.learnsC.tolearnD.learning(江西省)3.建造这座立交桥将花费工人们一年多的时间。Itwill_________theworkersoverayear__________________theflyover.(北京市海淀区)4.It'sverynice_________youtogetmetwotickets_________theWorldCup.A.for，ofB.of，forC.to，forD.of，to(安徽省)二、动词不定式作宾语在want，like，agree，hope，wish，learn，begin，start，seem，decide，hate，choose，forget，remember等动词后面，可以接不定式作宾语。如果其后接形容词补足语时，则可以用it作形式宾语，而把作真正宾语的不定式放到后面。1.Hewants______somevegetables.A.buyB.buyingC.tobuyD.buys(山西省)2.Don'tforget______yourhomeworkwithyouwhenyoucometoschool.A.tobringB.bringingC.totakeD.taking(福建省)3.Hefounditverydifficult______.A.sleepingB.sleepsC.sleptD.tofallasleep(湖南省)三、动词不定式作宾语补足语不定式可以用作宾语补足语。后面可以接不定式作宾语补足语的动词有：ask，teach，expect，tell，allow等。1.Robertoftenasksus______hisChinese,sohisChineseismuchbetterthanbefore.A.helphimB.tohelphimwithC.tohelpwithD.helpshimwith(江苏省)2.MrLioftenteacheshisJapanesefriends______Chinesefood.A.cookB.cooksC.tocookD.cooked(甘肃省)作句子的表语：不定式放在be动词后面，用作表语如：Herdreamistobeapoliceman.Myjobistohelpthepatient.Yourtaskistocleantheclassroom.Mydreamistoownarobot.Thedoctor’ssuggestionistotakemoreexercise.Thebestwayistotalktoyourparents.HisplanistotraveltoBeijingthissummer.四、动词不定式作状语go，come，try，do/tryone'sbest等动词或短语动词作谓语时，其后常常可以接不定式作目的状语。1.Shewent______herteacher.A.toseeB.looksC.sawD.seeing(江西省)2.MeimeilikesEnglishverymuch.Shedoesherbest______Englishwell.A.learnB.learningC.tolearnD.learns(四川省)"be+形容词+todosth"结构中的不定式作状语，常表示原因或方式3.I'msorry______that.A.hearsB.hearingC.hearD.tohear(河北省)4.I'msorry______you.A.troubleB.totroubleC.troublingD.troubled(吉林省)5.Mymotherwasveryglad______heroldfriend.A.tomeetB.meetC.metD.meets(甘肃省)在上述"too+形容词/副词(forsb)todo…"(太……而不能……)和"enough(forsb)todo…"(足以、足够……做……)结构中，不定式作结果状语。6.Thepandaissofatthatitcan'tgothroughthehole.(改为意思相同的句子)Thehole________________________suchafatpandatogothrough.(广东省)7.Theiceonthelakewassothinthatpeoplecouldn'tskateonit.(改为意思相同的句子)Theiceonthelakewasn't______enough______people__________________.(广东省)Keys：6.is，too，small，for7.thick，for，to，skate...
