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《高考语法复习不定式.ppt》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、Theinfinitive不定式动词不定式的时态和语态一般式进行式完成式否定形式todonottodotobedonetobedoingtohavedone被动形式主动形式tohavebeendoneforsbtodo复合结构forsbtodo动词不定式Todothatsortofthingisfoolish。Iwanttoseeyouthisevening.Allyouhavetodoistofinishitquickly.Wefoundahousetolivein.Shecameheretostudy
2、English.Iwarnedthepatientnottoeatcoldwateraftertheoperation.主语宾语表语定语状语宾补①Toseeistobelieve.Toloseheartmeansfailure.②It’sagoodhabittogetupearly.③It’snecessaryforustodrinkwaterasoftenaspossible.1.动词不定式作主语(Subject)：注：1.动词不定式作主语时，谓语动词用单数。2.如果动词不定式太长，常把it用作形式主语
3、。句型1：It+谓语+todoeg:Ittakesusanhourtogettherebybus.句型2：It’s+n.+todoeg:It’sourdutytohelpthepoor.句型3：Itisadj.for/ofsb.todosth.注：for/ofsbtodosth为不定式复合结构。eg:It’sverykindofyoutohelpme.2.不定式作表语Myjobistohelpthepatient.TheonlythingIcandoistostudyhard.作表语的不定式带to与不带t
4、o:作表语的不定式通常带to，当主语部分含有实义动词do，不定式作表语可省to。TheonlythingIcandois(to)wait.Allyouhavetodois(to)pressthebutton.1).其主语多为抽象名词(wish,need)eg:Mywishistobeascientist.Themainthingistokeepourroomclean.2).不定式tolet,toblame主动表被动.eg:Thehouseistolet.Thedriveristoblameforthis
5、accident.3).betodo可构成将来时态,表“准备/打算/计划/需要”;eg:Sheistoreturnnextweek.Itwasabouttoleavewhenitstartedtorain.hope,wish,want,promise,agree,decide,plan,refuse,manage,determine,fail,hurry3.动词不定式作宾语：注：1.有些动词后面只能跟不定式作宾语。2.不定式作宾语，如果后面带有宾补时，用it作为形式宾语，不定式后置Ifinditinter
6、estingtoworkwithhim.Hefeltitahardtasktofinishitontime.e.g.Ipromisetofinishthehomeworkontime.want,ask,teach,promise,tell,allow,permit,forbid,advise,persuade;order;invite4.动词不定式作宾语补足语：Theteacheradvisedustoreadeverymorning.注：但感官动词(see,observe,hear,find...)，使
7、役动词(make,let,have)后省略to作宾补，在被动语态中加回to。Inoticedhimleave.=Hewasnoticedtoleavebyme.Ihavesomebooksforyoutoread.Pleasegivemeaknifetocutwith.Sheislookingforaroomtolivein.5.不定式作定语注：不定式作定语往往表示尚未发生的动作。比较:①Ihavesomeclothestowash.②Iamgoingtoattendanimportantmeetingt
8、obeheldtomorrow.1).动宾关系:Ihavealotofworktodo.Givemeapieceofpapertowriteon.2).主谓关系:Sheisthebestpersontofinishthework.Womenandchildrenwerethefirsttogetintothelifeboat.3).修饰性关系(同位):need,time,way,right,chance,courage,rea
