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语法复习专题13状语从句Unit13It will be fiveyears beforehe returnsfrom England.
①till,not…until•••,until,before,since Don t getoff thebus untilit hasstopped.He waitedfor hisfather until(till)it wastwelve oclock.began torain.No soonerhad hearrived/He hadno soonerarrived thanshe startedcomplaining.
③directly,immediately,the moment,the minutethat***He madefor thedoor directlyheheard theknock.
④each time,every time,by thetimeEach timehe cameto mycity,he wou1d callon me.注意表示未来情况,主句用将来时,从句用现在时
2、让步状语从句1although与though可以引导让步状语从句,不能与but连用,但可以与yet连用Although theyare poor,yetthey arewarm-hearted.2even if或even though引导让步状语从句,表示“即使”,“纵然”,用来使人注意下文所强调内容的性质I11get thereeven ifthough Ihave tosell myhouse toget enoughmoney togo byair.3no matter后接上who、what、where how等疑问词,也可以在这类疑问词后面力口上ever构成whoever、whatever whereverhowever等Don ttrust him,no matterwhat/whatever hesays.Whoever breaksthe lawwillbepublished.No matterhow hardthe workis,you dbetter try to doit well.4as也可以引导让步状语从句要用倒装Child asthoughhe is,he knowsa lot.Much asI likeit,I wont buy.Try ashe would,he couldnt liftthe heavybox.
3、原因状语从句because,for,as,since,now that1表示不知道的原因时用because,即说话人认为听话人不知道,因此because从句是全句最重要的部分,通常它被置于主句之后You wantto knowwhy I m leavingI mleaving becauseImfull.for虽然表示不知道的原因,但其语气较because要弱得多,是可说可不说的话,它只能置于主句之后,这时,for是并列连词如果不是因果关系,而是对前面主句的内容加以解释或推断时,只能用for如It smorning now,for thebirds aresinging.很显然,鸟叫不可o能是“现在已是早上”的原因2表示已经知道的原因时用as或since,即某种原因在说话人看来已经很明显,或己为听话人所熟悉,因此它是句中不很重要的部分since要比as正式一些,它们通常被置于语句之前,但有时却相反Seeing allof thechildren alreadyseated,he said,“Since everyoneis here,let,sstart.”3下列情况下只能使用because:
①在回答why的问句时;
②在用于强调句型时;
③被not所否定时
4、地点状语从句where,whereverMake amark whereveryou haveany questions.We willgo wherethe Partydirects us.
5、目的状语从句that,so that,in orderthat注意目的状语从句的谓语动词常与情态动词连用,否则可能是结果状语从句不可置于句首
6、结果状语从句that,so that,so•••that,such•••that•••注意so+形容词/副词+that从句;such+名词+that从句
7、方式状语从句as,as ifthoughI11do asI amtold to.It looksas ifit isgoing torain.
8、比较状语从句than,as
9、条件状语从句if,unless,so as long as,in case,once,a faras,on conditionthat.注意if与unless的区别不能用and连接两个unless从句,即不能有…unless…,and unless••o但if…not andif…not却不受此限You wont loseyour weightunless youeat lessand unless you exercisemore.X但可以说…unlessyoueat lessand exercisemore.
10、注意状语从句中从句的省略现象1连接词+过去分词Dontspeak untilspoken to.Pressure canbe incrasedwhen needed.Unless repaired,the washingmachine isno use.2连词+现在分词Look outwhile crossingthe street.3连词+形容词/其他常见的有it necessaryif possiblewhen necessary、if any等w
二、精典名题导解选择填空
1.1dont thinkIll needany moneybut Illbring some.NMET2000A.as lastB.in caseC.once againD.in time解析答案为句意为“带些钱以防万一”,只能选择引导的条件状语从句,后Bo incase面省略了【should needit
2.The WTOcant liveup toits nameit doesntinclude acountry thatis hometoone fifthof mankind.NMET2000A.as longas B.while C.if D.even though解析答案为本题考查状语从句的用法句意为“假如世贸组织不包括占世界人口五c分之一的中国的话,那它就名不副实”语气过于强烈,和不符合aslongas whileeven though句意、3Someone calledmeupin themiddle ofthe night,but theyhung upI couldanswerthe phone.NMET2000上A.as B.since Cefore D.until解析答案为题意为半夜里有人打来电话,我没来得及就挂了暗示在接话前就C but挂了
4.You shouldtrytoget agood nightssleep muchwork youhave todo.A.however B.no matterC.although D.whatever解析答案为此题考查连词用法,依据结构形/副+主语+谓语故选A However+A
5.He speaksEnglish wellindeed,but ofcourse nota nativespeaker.A.as fluentas B.more fluentthanC.so fluentlyas D.much fluentlythan解析答案为此题考查用久近.人和用/庆$用法,前者主要用于否定句,C50@52522N.在这里要修饰谓语动词,故选C。