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1、GrammarInfinitiveTofindabestfriendisdifficult.2.Ineedtosleepfor8hourseverynight.3.Iaskedhimtocomeover.4.Ihaveanimportantmeetingtoattend.5.Hisaimwastocheermeup.6.Youneedtoapologizequicklytoavoidlosingagoodfriend.主语宾语宾语补足语定语表语状语动词不定式的使用Todolikethatisfoolish.IwanttoseeyouIamtovisi
2、tyouHehaslotsofworktodo.IstudyhardtoimproveEnglish.Theteacheraskmetoanswerthequestion.主语宾语表语定语状语宾补表语主语宾语宾语补足语定语状语I基本用法1.作主语TolearnEnglishisreallyimportantnowadays.Tobeadoctorismydream.1.学习外语真的很重要。2.做一名医生是我的梦想。Subjectb)Itis+n.(apity,apleasure,one’sduty,ashame…)+todoa)Itis+adj+(o
3、f/forsb)+todoIt作形式主语代替不定式常见句型:2.宾语a)用不定式作宾语的动词:want,hope,wish,like,agree,learn,promise,refuse,arrange,decide,determine,demand,fail,manage,offer,prepare,pretend,mean,expect,choose,prefer,seem.Amywantstoknowmoreaboutthefilm.2005年天津卷：Idon’twant___likeI’mspeakingillofanybody,butthe
4、manager’splanisunfair.A.tosoundB.tobesoundedC.soundingD.tohavesoundedb)当不定式短语较长时,用it作形式宾语,常用动词有feel,think,find,believe,consider,make等。我发现与他一起工作很有趣。Ifind_____interesting_______withhim.他已养成早晨读英语的习惯。Hehasmade_____arule______Englishinthemorning.ittoworkittoread8.Thechairmanthought_
5、__necessarytoinviteProfessorSmithtospeakatthemeeting.A.ThatB.itC.thisD.himB3.宾语补足语你应该让他们来帮助你。我希望你能使每样东西都保持整洁。I'dlikeyou________everythingtidy.Youshouldgetthem__________.tohelpyoutokeep通常这样的动词用在以下的结构里:V+sb/sth+todosth(常用谓语动词有:get,ask,force,order,tell,invite,allow,permit,forbid,w
6、ish,want,like,expect,advise,beg,cause,persuade,teach,warn,encourage等。)4.表语Ourmostimportanttasknowistomakeaplan.不定式常在系动词be,seem,appear,remainetc后Ihavealotofworktodo.我有许多工作要做。Ihavenoonetotalkto.我没有一个可以交谈的人。5.不定式作定语(n后)A用做定语的不定式和它修饰的词在意义上有动宾关系不定式是Vi，后面就必须有恰当的介词TorF?Sheisaverynicep
7、ersontowork.Pleasegivemeaknifetocutwith.√B:下列名词的后面常+不定式用作定语。如：ability,chance,opportunity,attempt,need,wayetcShehasanability_______(说）fourlanguages.shehasachance_______（出席）thePresidentialceremony.tospeaktoattendC不定式可用于序数词、最高级后作定语Heisthefirst________(come)thelast________(leave).S
8、heisthebestone_______(do)thejob.tocometodotoleaveTheca
