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1、语法复习-动词-ing形式作主语和宾语必修四UNIT21.动词-ing形式是在动词末尾加-ing,属于非谓语动词。如:do-doing,write-writing,sit-sitting,etc.否定形式:not+v--ing构成2.动词-ing形式作主语或宾语时,也可称为动名词。1.A.Listeningtomusicisoneofmyfavoritehobbies.B.Asweallknow,smokingdoesharmtoone’shealth.动词-ing形式作主语表示一般或抽象的多次性行为。动词-ing
2、形式作主语谓语动词用单数。如:Readingaloudisveryimportantforustolearnaforeignlanguage.Goingtobedearlyandgettingupearlyisconsideredtobeagoodhabit.2.A.It’snousetalkingtohim;hewon’tchangehismind.B.Itissimplyawasteoftimediscussingsuchmatterswithhim.在句型It’s+nogood(nouse,useless,a
3、wasteoftime,nice...)+doingsth.中,it是形式主语,后面的动词-ing(短语)作真正的主语。1Isitworthwhilequarrellingwithher?2It’snogoodwaitinghere.Let’sgohome.3Itwasawasteoftimereadingthatbook.3.A.Joansuggestedaskingherfatherforhisopinion.B.WeareconsideringflyingtoEgyptforthecomingholiday.
4、我们可以归纳总结出动词-ing形式作宾语的用法特征:有些动词后常跟动词-ing形式作宾语,如第三组例句中的suggest和consider。常见的这类动词还有:常跟动词ing作宾语的动词歌诀:考虑建议盼原谅,承认推迟没得想,避免错过继续练,consider,suggest/advise,lookforwardto,excuse,pardonadmit,delay/putoff,fancyavoid,miss,keep/keepon,practise否认完成停能赏,不禁介意准逃亡,不准冒险凭想象。deny,finis
5、h,stop,enjoy/appreciatecan’thelp,mind,allow/permit,escapeforbid,risk,imagine2.有些短语如can’thelp,beusedto,endup,feellike,leadto,bebusy,betiredof,befondof,beafraidof,beproudof,thinkof/about,putoff,keepon,insiston,begoodat,giveup等后常接名词、代词或动词-ing形式作宾语。如:I’mfondofcoll
6、ectingstampsandcoins.4.A.Hemadeapoorlivingbysellingnewspapersonthetrain.B.Themanleftthepartywithoutsayinggoodbyetothehost.动词-ing形式还可作介词的宾语5“Thereis+no”后可以用动词-ing形式作主语,表示“没法……”。如:Therewasnotellingwhenthismighthappenagain.没法预料这样的事什么时候会再发生。Therewasnoknowingwhathe
7、coulddo.他能做什么很难说。[注意]动词-ing形式的复合结构是指在动词-ing形式前面加上逻辑主语来强调动作的执行者,该逻辑主语常为形容词性物主代词或名词所有格;当逻辑主语不出现在句首时,可用人称代词的宾格代替形容词性物主代词或用名词普通格代替名词的所有格。如:I’mannoyedaboutJohn’sforgettingtopay.2.动词-ing形式的否定形式是在其前面加not,带有逻辑主语时not应在动词-ing形式之前。如:Notcleaningherteethmadehersmellbad.You
8、rschoolmate’snotcominghomeintimemadeherparentsworried.需要注意的问题:以下的动词后面加动词的不定式作宾语:decide,hope,expect,seem,agree,afford,arrange,choose,offer,plan,promise,determine,demand,manage,fail,