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1、语法课件:状语从句状语从句引导词例句地点状语从句where,whereverMakeamarkwhereyouhaveaquestion.在你有问题的地方标个记号。Sitwhereveryoulike.坐在你喜欢的地方。条件状语从句(真实/非真实)if(不能用whether替换),unless,so/aslongas,onconditionthat,so/asfaras,ifonly(=if)Ifheisnotintheoffice,hemustbeoutforlunch.如果他不在办公室,那一定是出去吃午饭了。Youmay
2、borrowthebooksolongasyoukeepitclean.你可以借这本书,只要你让它保持干净。原因状语从句because,since,asHehadtostayathomeyesterdaybecausehewasill.昨天他必须待在家里,因为他病了。Sinceeveryoneishere,nowlet'sbegin.大家都到齐了,现在开始。结果状语从句sothat,so...that,such...thatHewassoexcitedthathejumpedfromthesofa.他如此激动以至于他从沙发上
3、跳了下来。续表状语从句引导词例句目的状语从句so,sothat,inorderthat,incase(以防,以免)Speakclearly,sothattheymayunderstandyou.说清楚些以便他们都能听懂。Heleftearlyincaseheshouldmissthetrain.他早早地离开,以防误了火车。让步状语从句although,though,as,evenif/though,however,whatever,whether...or,nomatterwho/when/what...Childashei
4、s,heknowsalot.尽管他还是个孩子,他却知道很多。Whatever(=Nomatterwhat)yousay,I'llneverchangemymind.不管你说什么,我都不会改变主意。比较状语从句than,so/as...as,themore...themore...Ihavemadealotmoremistakesthanyouhave.我犯的错误比你犯的多得多。Thebusierheis,thehappierhefeels.越忙他觉得越快乐。方式状语从句as,asif/though,theway,rather
5、than...YoumustdotheexerciseasIshowyou.你必须按照我教你的去做练习。Heactedasifnothinghadhappened.从他的举止行为看,似乎什么也没发生过。续表△状语从句讲解△一、时间状语从句1.when,while,as的特殊点(1)表示带有规律性的“每当”或从句和主句的动作存在先后关系时,一般用when。(2)when可用作并列连词,意为“在那时,突然”,常用于下列句式:beabouttodo---when;bedoing---when;beonthepointofdoing
6、---when;sb.hadjustdonesth.when---(3)表达“随着”或“一边……一边……”的含义时,一般用as。(4)as作“当……时候”解,从句的谓语一般不可是状态动词。(5)while从句的谓语动词不可是短暂性的。【例1】________thedayswenton,theweathergotworse.A.WithB.SinceC.WhileD.As答案D【例2】________youareathomealone,pleasedon'tleavethedooropen.A.UntilB.WhileC.Be
7、foreD.As答案B2.表示“一……就……”的时间状语从句(1)assoonas常用一般现在时表将来。(2)hardly/scarcely...when...或nosooner...than...结构中,主句谓语用过去完成时,从句谓语用一般过去时。把nosooner和hardly/scarcely提到句首时,应用倒装语序(3)表示时间概念的副词充当连词,如:immediately,directly,instantly等。(4)“the+瞬间名词”,如:themoment,theminute,thesecond等。【例3】J
8、ustusethisroomforthetimebeing,andwe'llofferyoualargerone________itbecomesavailable.(2010·安徽)A.assoonasB.unlessC.asfarasD.until答案A【例4】Shehad______