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1、状语从句时间状语从句:when,whenever,as,while,before,after,until,till,since,eversince,once,assoonas,everytime,themoment,instantly,directly地点状语从句:where,wherever原因状语从句:as,because,since,seeing(that),considering(that),nowthat,notthat…butthat目的状语从句:that,sothat,inorderthat,lest,forfearthat,i
2、ncase结果状语从句:that,so…that,such…that条件状语从句:if,unless,suppose,supposing,so/aslongas,sofaras,oncondition(that),provided(that)让步状语从句:though,although,nomatter,evenif,eventhough,however,whatever比较状语从句:than,as方式状语从句as,asif,asthough一、时间状语从句1、when,while,as和wheneverwhen表时间点,时间段while表时
3、间段;有“而”的意思as“当……”,“一边……一边”,“随着……”whenever每当,无论什么时候Itiscoldwhenitsnows.Whilethereislife,thereishope.Whilewewerespeaking,hewasreadingnewspaper.JustasMrsRichardswasenteringthedinning-room,therewasaknockonthefrontdoor.Asweage,wetradestrengthforingenuity,speedforthoroughness,and
4、passionforreason.随着年龄的增长,我们用力量换来了机敏,以速度换来了严谨,以热情换来了理智。注:1)when还可作并列连词,其意义为“那时,这时”,相当于andatthis/thattime。常用于下列句式:sb.wasdoingsth.when...某人正在干某事就在这时……sb.wasaboutto/goingtodosth.when...某人正打算干某事就在这时……sb.bodyhasjustdonesth.when...某人刚干了某事就在这时……2)如果主句表示的是短暂动作,而从句用延续性动词的进行时态表示在一
5、段时间内正在进行的动作时,when,while与as可互换使用。如:When/While/AsIwaswalkingdownthestreet,Icameacrossanoldfriendofmine.1、before/afterItwillbefiveyearsbeforewemeetagain.五年之后我们才能见面。Afteryouthinkitover,pleaseletmeknowwhatyoudecide.Afterherhusbandhadgonetowork,shesentherchildrentoschool.2、until
6、,till,not...until1)肯定句:主句的谓语是延续性动词,主从句均为肯定式,意为“某动作一直持续到某时间点才停止”PleasewaituntilIcomeback.等我回来。2)否定句:主句的谓语是非延续性动作,从句为肯定式,意为“某动作一直到时间点才开始”Hewon’tgotobedtill/untilshereturns.3)Till不可以用在句首,而until可以UntilyoutoldmeIhadnoideaofit.4)not…until句型中的强调和倒装用法ItwasnotuntilyoutoldmethatIhada
7、nyideaofit.NotuntilyoutoldmedidIhaveanyideaifit.3、since从句谓语动词多用于一般过去时态,主句用现在完成时态或现在完成进行时态Shehasbeenworkinginthisfactorysincesheleftschool.IhavewrittentoAlicefourtimessinceIcamehere.Itis+一段时间+since从句的句型中,时间计算一律从since从句动作完成或状态结束时算起Itisthreeyearssincethewarbrokeout.战争爆发以来,有三年了
8、。Itisthreeyearssinceshewasinourclass.她离开我们班有三年了。4、assoonas,immediately,directly,in