会计学在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语（包括非谓语动词）、定语或状语，或是整个句子。类型连词时间状语从句时间状语从句-when/while/as时间状语从句-when/while/as时间状语从句-when/while/as时间状语从句-when/while/as__________________weweretalking,Mr.Smithscamein._______theycamehome,Iwascookingdinner.Iwasabouttogotobed_______Iheardsomeoneknockatthedoor.4.________wewerewatchingTV,hewasstudying.5.Heisfat_______hisbrotheristhin.6.______shesang,tearsrandownherface.时间状语从句-before/after时间状语从句-before/afterBefore与afterBefore与after时间状语从句-till/untiltill与until时间状语从句-since时间状语从句-“一...就...”时间状语从句-“一...就...”(1)当主句为将来时态或具有将来意义时，时间状语从句通常要用一般现在时表示将来意义。Turnoffthelightsbeforeyouleave.Iwilltellhimassoonashearrives.(2)与since从句搭配的主句的时态通常是现在完成时态。Hehaslivedheresince1999.WherehaveyoubeensinceIlastsawyou?改错题:1.IgotintouchwithCharles________Ireceivedhisletter.A.whenimmediatelyB.soonC.immediatelyD.suddenly2.Wewerejust________callingyouup________youcamein.A.about;whenB.onthepointof;whileC.onthepointof;whenD.onthepointof;as3.Mostofhisgreatnovelsandplayswerenotpublishedorknowntothepublic________histragicdeathin1786.A.evenbeforeB.eversinceC.untilafterD.untilbefore4.Babiessleep16to18hoursinevery24hours,andtheysleepless________theygrowolder.A.whileB.asC.whenD.after5.－DidyouremembertoreturnthebooktoourEnglishteacher?－Yes.Igaveittohim________Isawhim.A.onceB.whileC.ifD.themoment6.AwarningnewsreportfromQatarannouncesthatagroupofIslamwillcontinuetokillAmericanswherevertheyare________theyleavetheArabworldforever.A.eventhoughB.incaseC.wheneverD.until7.Itwillbefiveyears________wemeetagain.A.sinceB.untilC.beforeD.when8.Howcantheylearnanything________theyspendalltheirsparetimewatchingTV?A.whereB.whenC.whileD.but要点:由连词where和复合关系词wherever(=nomatterwhere)引导.句型1：Where＋地点从句，（there）＋主句。【注意】此句型通常译成“哪里……哪里就……”；主句在从句后面时，there可用可不用；如果主句在从句的前面时，一般都不用there。例如：Wherethereisnorain,farmingisdifficultorimpossible.Youshouldhaveputthebookwhereyoufoundit.句型2：Anywhere/wherever＋地点从句，＋主句。【注意】anywhere本身是个副词，但是，常可以引导从句，相当于连词，意思相似于where