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1、动词不定式、动名词用法要点讲解论文一、作主语⒈不定式作主语动词不定式作主语时,句子的谓语动词常用单数,其位置有以下两种:(1)把不定式置于句首。如:Togettherebybikeetime+todoHos(appears)+形容词+todoItseemedimpossibletosavemoney.在句型③中,常用表示客观情况的形容词,如:difficult,easy,hard,important,impossible,necessary等;在句型④中,常用careless,clever,good,foolish,hone
2、st,kind,lazy,nice,right,silly,stupid,eyEnglish.=YouarekindtohelpmeyEnglish.⒉动名词作主语Learninge)+doing…It'snogoodreadingindimlight.It'snousesittingheremingintheseainportant,necessary则不适用于这种结构,应用不定式代替,如:It'simportantforyoutokeepfit.③Thereisno+doingThereisnosayingpossibl
3、eto…"结构。⒊动词不定式和动名词作主语的区别①不定式作主语经常表示具体动作,常与特定的动作执行者联系在一起;而动名词作主语经常表示抽象动作,经常不与特定的动作执行者联系在一起。如:It'snogoodeatingtoomuchfat.It'snogoodforyoutoeatsomuchfat.②动名词结构作主语,可以用名词或代词属格形式作逻辑主语。如:It'snouseyourpretendingthatyoudidn'tkno,arrange,choose,decide,demand,expect,fail,help
4、,hope,lean,long,manage,offer,plan,prepare,pretend,promise,refuse,ymoneyback.IdecidedthatIymoneyback.ychiefpurposeistopointoutthedifficultiesofthematter.③ary?②Iagine,judge,kno(tobe)oneofthebestbiologyteachersofNo.1MiddleSchool.但当不定式是完成式时,to不能省略,如:ary'sbirthdayparty.
5、(不定式作主语)Itpossibleforlosttimetobemadeup.(不定式作主语)Ieined.(不定式作状语)在Therebe结构中,修饰主语的不定式可用被动,也可用主动。如:Therearestillmanythingstotakecareof(tobetakencareof).但有时两种形式表达的意思不同,如:Theseisnothingtodonops.IshallneverforgetseeingtheGreate.aginehavingtravelledonthemoon.ancameinselfo
6、nhavingneverbeenbeateninclass.②有些动词后的动名词用主动形式,但表示被动意义。如:Thebikeneedsrepairing.Ifathingise.②—akeanymistakesinyourhomeoney?orepractice.⒎"to"在下列短语中是“介词”,后接动名词或名词形式。如:devote…to,faceupto(勇敢地面对),lookforwardto(盼望),objectto(反对),taketo(养成习惯,对……感兴趣;开始从事某种活动),beusedto(习惯于)等。T
7、AG: