高二英语Unit 9 Saving the earth课件3人教版.pptVIP

高中英语 book2aunit1 动词不定式的用法 1 动词不定式的用法 作主语作宾语作定语作表语作宾补作状语 动词不定式 2 动词不定式的时态和语态 3 巩固练习 1 动词不定式作主语 动词不定式作主语 谓语动词用第三人称单数 togettherebycarwilltakeawholeday howtogetenoughmoneyisstillaquestion tomakeaplanforourstudyisveryimportant 1 动词不定式作主语 有时候为了保持句子平衡 常用it作形式主语 放到句首 而将作真实主语的动词不定式放到句末 itwilltakeawholedaytogettherebycar itisimportanttomakeaplanforourstudy itisimpossibleformetofinishtheworkinaweek 2 动词不定式作宾语 动词不定式作宾语常用于下列及物动词后 want agree decide manage wish hope ask like love choose promise continue plan learn expect offer prepare refuse pretend attempt intend threaten seek hesitate long desire fail等等 ihavelearnedtodrivethecar hepromisedtocomebuthehasn tturnupyet hepretendedtobereadingwhenhismothercameintohisroom theboysarelongingtowatchtheworldcup 动词不定式作宾语应注意的问题 1 有些动词后跟动词不定式和动名词作宾语意义截然不同 try goon stop mean regret remember forget等 trytodosth 尽力去做某事 trydoingsth 试一试 试试看 tryknockingatthebackdoorifnobodyhearsyouatthefrontdoor trytogetthereontime meantodosth 打算做某事 meandoingsth 意味着做某事 iwon twaitifitmeansdelayingaweek imeanttohelpyou butiwasbusyatthatmoment forgettodosth 忘了去做某事 forgetdoingsth 忘了做过某事 iforgettellingheraboutit iforgettobringthepursewithmewhenilefthomethismorning remembertodosth 记住去做某事 rememberdoingsth 记得做过某事 irememberreadingthestoryinsomebook remembertoposttheletterformewhenyougotothepostoffice stoptodosth 停下来去做某事 表目的 stopdoingsth 停止做某事 作宾语 isuggestweshouldstoptohavearest thestudentsstoppedtalkingwhentheteachercamein goontodosth 继续做另一件事 goondoingsth 接着做同一件事 afterashortrest theywentondoingthework afterfinishingthehomework thestudentswentouttoplayfootball regrettodosth 遗憾地做某事 regretdoingsth 后悔作了某事 iregrettosaythatyouhaven tpassedtheexam iregrethavingtoldhimaboutit 动词不定式作宾语应注意的问题 2 如果不定式作宾语而后面又有一个宾语补足语 这时要用it作形式宾语而把这个动词不定式放到补语后 ifeelitmydutytohelpyou ioncethoughtitimpossibleforustofinishthejobinsuchalimitedtime 3 动词不定式作定语 动词不定式作定语 它与所修饰的名词或代词可能是主谓关系 也可能是动宾关系 hewasthelastonetoleaveschoolyesterday wehavemuchhomeworktodoeveryday 4 动词不定式作表语 动词不定式常放在系动词 be动词 后作表语 有时也放在其他少数连系动词如 remain seem sound等后 hisplanistospendafewdaysinthecountryside heappearstohavecaughtcold toseeistobelieve 当表语是动词不定式时 作主语的谓语动词也只能是动词不定式 即主语和表语结构要一致或对称 5 动词不定式作宾补 常要求跟动词不定式作宾语的动词有 1 可接带to的不定式作宾补的动词有 ask get allow forbid prefer force inspire advise cause tell order warn teach permit wish invite encourage等 you dbettergettomtodoit shedoesn tallowmetousehercomputer theteachertoldhimnottobelateagain heinvitedustoattendhisbirthdayparty 2 可跟省to的动词不定式作宾补的动词有 在部分感官动词和使役动词后 如 see watch notice observe lookat listento feel make let have 注 help后可跟省to或带to的不定式作宾补 theteacherhadusrecitethetexteveryday iwaslettodotheexperimentalone washenoticedtoleavethehouse 动词不定式在主动语态中用省to的形式作宾补 但在被动语态的句子中 要用带to的形式作主语补语 3 有的动词后可以跟tobe形式作宾补 而不是todo作宾补 如 think consider suppose believe imagine find prove等 wefindhim tobe honest iconsiderhim tobe mybestfriend isupposehim tobe aboutfifty 6 动词不定式作状语 动词不定式作状语用来修饰动词 形容词 副词或整个句子 通常表示目的 原因 结果 程度等 igotupearlyinorderto soastocatchthefirstbus 作目的状语 tolearnenglishwell youshouldpractiseitwheneverpossible 作目的状语 hewepttohearthenews 作原因状语 iamgladtoseeyouhere 作原因状语 hehurriedtothepostoffice onlytofinditclosed 结果状语 theboyistooyoungtodresshimself 同上 动词不定式的时态和语态 1 动词不定式的一般式 todo 用于表示不定时所表示的动作与句子谓语动词几乎同时发生火灾气候发生 sawherentertheroom ihavesomeimportantnewstotellyou 2 动词不定式的进行式 动词不定式的进行式表示动作正在进行 和句子谓语动词所表示的动作同时进行 hepretendedtobereadingwhenhismothercameintohisroom theyaresaidtobebuildinganotherbridgeacrosstheriver 3 动词不定式的完成式 动词不定式的完成式表示动作发生在谓语动词所表示的动作前 iamsorrytohavekeptyouwaitingsolong ihappenedtohavereadthebookbefore 巩固练习 1 severalofthesewashesanddryersareoutoforderand needtoberepairingb repairingisrequiredofthemc requirethattheyberepaired d needtoberepaired 解析 and并列谓语动词 needtoberepaired相当于needrepairing d 2 iwishyouhadbroughtyourfamilywithyou i llgetthem nexttime a comingb tocomec comed havecome b 解析 使役动词get后跟带to的动词不定式作宾补 let make have后跟省to的动词不定式作宾补 3 weclimbedtothetopofthetower abetterviewofthearea gettingb gotc havinggotd toget d 解析 动词不定式作目的状语 其余几个没这功能 4 whatisthewaysmiththoughtof enoughmoneytobuythenewhouse a gettingb havinggotc beinggotd toget d 解析 名词theway后跟有两个定语 一个是定语从句smiththoughtof 一个是动词不定式togetenoughmoneytobuythenewhouse 5 theyoungassistantwasnoticed thebankalonelastnight a enteringb enterc toenterd entered c 解析 感官动词后可跟现在分词和省to的动词不定式作宾补 不定式表示全过程 现在分词表示正在进行 在被动语态中用带to的动词不定式作主语补语 6 wangdongwantedtosurftheinternet buthisfathertoldhim a nottodob notdoitc donottod notto d 解析 tellsb not todosth 为了避免重复 后面省略了surftheinternet 7 thepartywassuccessful butwethoughtitapitynot you a inviteb toinvitec invitingd toha