一,什么是状语从句状语从句在复合句中作状语,来说明一件事情发生的时间,地点,原因,条件,结果等.•八种状语从句:1.时间状语从句:2.地点状语从句:3.原因状语从句:4.条件状语从句:5.（比较）方式状语从句:6.目的状语从句:7.结果状语从句:8.让步状语从句:引导词可分为两部分．whenwheneveraswhilebeforeafteruntil(till)sinceassoonaseverytimenexttimethefirst/…timethemomenttheminuteinstantlyimmediatelydirectly(一…就…)Nosooner…thanHardly…whenA:when,while,as的区别：1._______hebrokein,wewerehavinganEnglishclass.2.Iwasabouttogoouttoplaybasket-ball_______itbegantorainhard.3.Thetrainhadgone______Igottothestation4.Youshallborrowthebook________Ihavefinishedreadingit．whenwhenwhenwhenwhen,while,as的区别：5.__________________Iwaswalkingdownthestreet,Icameacrossanoldfriendofmine.6.Thelittlechildrensanghappily______theywalkedalong.7.____summercomes,itisgettinghotterandhotter.8______summercoming,itisgettinghotterandhotter.When/WhileasAsWithwhen,while,as的区别：8>.(06天津)ThecostoflivinginGlasgowisamongthelowestinBritain,______thequalityoflifeisprobablyoneofthehighest.9>.(04年江苏)______Iacceptthatheisnotperfect,Idoactuallyliketheperson.whileWhile而，然而(二者对比）尽管，虽然（放在句首）1.__________________He__________________(正要告诉我)__________________thesecret________someonepattedhimontheshoulder2.<1998NMET>Whydoyouwantanewjob________youhavegotsuchagoodonealready?wasabouttotellmewasjusttellingwasonthepointoftellingwhenwhen•Conclusion:when/while/as引导时间状语从句时的中文意义：whenwhileas1.当….的时候2.这时,正在这时1.当…的时候(从句的谓语必须是延续性动词）2.而,然而(强调两者对比）3.虽然1.一边….一边….2.随着….3.考虑到;既然(consideringthat)B:.before的用法1).表示“在……之后……才”。Wehadsailedfourdaysbeforewesawland.“…2).…还没来得及……就……”。HeranoutoftheroombeforeIcouldsayaword.3).“在……之前就……”。Manypeopleleftforhomebeforethefilmended4).和hardly连用，”hardly…before”表示“刚一……就……”。该结构主句常用过去完成时，当hardly位于句首时要用倒装语序，例如：A:Ihadhardlysatdownbefore(when)thetelephonerang.B:Thegirlhadhardlyrungthebell——thedoorwasopenedsuddenly,andherfriendrushedouttogreether(2010福建高考）.A.beforeB.untilC.asD.sincebefore表示“要过多久才…”Itwillbe(is)+一段时间+before从句(does)要过……才能做Itwillnotbe+一段时间+before从句要不了……就能做Itwas+一段时间+before从句(did)过了……做了……Itwasnot+一段时间+before从句(did)没过……做了……1)since+过去一个时间点(如具体的年、月、日期、钟点）C.sinceIhavebeenheresince2002.3)since+从句Greatchangeshavetakenplacesinceyouleft.2)since+一段时间+agoIhavebeenheresincenineyearsago.Itis/hasbeen+一段时间＋since从句(did)Itis10yearssinceIsmoked.(=Igaveupsmoking/droppedsmoking)我不抽烟已有10年了.延续性动词:反过来翻译短暂性动词:直译•1>.-Haven’tseenyouforages!DoyoustillworkinXi’an?•-__.It’sfouryearssinceIworkedthere.•A.No,Idon’t.B.No,Ihaven’t•C.Yes,Ido.D.Yes,Ihave.3>.It_______________（be)5yearssincehegraduatedfromcollege.is/hasbeen•◆几个极易混淆的句型:•when/before/since/that•1>.Itwas5am__________wearrivedatthevillage.•2>.Itwasat5o’clock_____hegothome.•3>.Itis/hasbeen3years___________welastmet.•4>.Itwas/willbetwoweeks_____________wemet/meetagain.•5>Itwasfiveyearslater_______hefinishedhisresearch.•突破点：whenbeforesince一看be动词的时态，二看时间段还是时间点。thatthatis/hasbeenD.till/until(在句首、与not无间隔连用及在强调句中只用until...
