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1、Grammar：TheInfinitive动词不定式B7，Unit1LivingwellToseeistobelieve.It’simportanttolearnEnglishwell.1.主语若不定式太长,往往用it作形式主语,不定式置后.Myjobtohelpthepatient.Yourtasktocleantheclassroom.isis2.表语Iwanttogohome.Theworkersdemandedtogetbetterpay.Ifounditnecessarytotalktohima
2、gain.3宾语think/consider/find/feelit+adj.+todo常接动词不定式作宾语的动词有：want,agree,afford,attempt,choose,dare,decide,demand,deserve,determine,fail,expect,hate,hesitate,hope,intend,manage,offer,plan,prepare,pretend,promise,refuse,seem,tend,wish等。想一想：哪些动词常跟doing作宾语？哪些动词
3、既可以跟todo作宾语也可以跟doing作宾语？Theteachertoldmetocleantheblackboard.Iexpectyoutogivemesomehelp.引导不定式作宾补的动词：warn,tell,allow,help,ask,force等+sbtodosth4.宾补四看watchseeobservenotice(1.)使役动词：三使letmakehave二听listentohear一感觉:feel(2.)感官动词有些动词跟不定式作宾语补足语时要省略掉toe.g.Imadehimdo
4、hiswork.Hewasmadetodohiswork(byme).注意(2.)help后面的“to”可省去e.g.Theyoftenhelpthegrandma(to)carrywater.(1.)在使役动词let,make,have和感官动词feel;hear,listento;watch,see,notice,observe等后面,不定式作宾语补足语时要省“to”（注:被动语态不能省to）(3)不定式用在介词but,except,besides后时,如果这些介词前有行为动词do的任何一种形式,那么
5、介词后的不定式不带to,相反则带to.（前有do，后省to）Shecoulddonothingbutcry.Youhavenochoicebuttogo.Whatdoyouliketodobesidessleep?Ihavesomethingtosay.Hehasalotofhomeworktodo.Heislookingforaroomtolivein.Thereisnothingtoworryabout.5.定语(如果不定式中的动词是不及物动词,则不定式中要有介词.)请给我一支写字的笔.Pleaseg
6、ivemeapentowritewith.Hespokeloudly(soas/inorder)tobeheard.(1.)表示目的:toinordertosoasto6作状语Hegotupearlytocatchthetrain.Icameheretoseeyou.(2.)表示原因:不定式可以用在作表语的形容词后作状语,sorry,surprised,happy,glad,eager,angry,right,wrong,rude,cruel,disappointed等。eg:I’mglad/please
7、dtoseeyou.Weweresurprisedtohearthenews.(3.)结果状语:注意:不定式往往表示与主观愿望相反（出乎意料）的结果。Hehurriedtothestation,onlytofindthetrainhadleft.7.插入语tobefrank,tobehonest,Tobeginwith,Totellthetruth,Idon’tagreewithyou.类似的结构归纳：不定式可以充当些什么成分？1.作主语2.作表语4.作宾语补足语3.作宾语5.作定语6.作状语7.作插入语
8、三、用法1.Toloveandtobelovedisthegreatesthappinessonecanget.2.Myambitionistobecomealawyer.3.Myintentionistohelpyou.4.Iamwritingthistotellyousomething.5.Doyouhaveanythingtosay?6.Itisterribletoseetheshipsinkingintothesea.
