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1)when,whenever,while,as,after,before,since,till,until,once等。
Wehavelearntquitealotaboutitsincewecamehere.
2)assoonas,hardly(scarcely)...when,nosooner...than,each(every)time,themoment,immediately(that)等。
AssoonasIsentane-mailmessage,Ireceivedpositiveresponses.
Themomentheheardthegoodnews,hejumpedwithjoy.
*地点状语从句
引导地点状语从句的连词是where,wherever.
Wherevershewent,shetookherlittledaughterwithher.
1)引导原因状语从句的从属连词有：because,as,since,now(that),seeingthat,consideringthat,inthat等。
Consideringthatheisafreshman,wemustsayheisdoingwell.
2)引导结果状语从句的连词有：so...that,such...that,sothat,that,so等。
MickeyMouseissoattractivethatthechildrenarereluctanttoleave.
3)引导目的状语从句的连词有：sothat,inorderthat,forfearthat,lest等，从句常使用may,might,can,could,would等情态动词。
Wegotupearlythismorningsothatwecouldcatchthefirstbustotherailwaystation.
1)引导条件状语从句的连词和词组有if,unless,as(so)longas,onconditionthat,incase,provided(providing)that,supposing等。
Aslongasyouhavetherightequipment,youcanuseatelephonelinetotransmitcomputerdata.
2)引导让步状语从句的连词和词组有though,although,whether,eventhough,evenif,nomatterwhat(when,how...),whatever(whenever,wherever,however....)等。though,evenif等引导状语从句可转换成含有as的部分倒装结构，具有强调意义。其结构为“形容词(副词、动词、名词)+as+主语+谓语”。
Nomatterwhatyoumaysay,Iwouldnotchangemymind.
Youngasheis,heisquiteexperiencedinthiswork.(=thoughheisyoung)
Childasheis,hecanspeakEnglishfluently.(=thoughheisachild)
*方式状语从句
引导方式状语从句的连词有as,justas,asif,asthough等。asif,asthough引导的状语从句中，谓语动词常用虚拟语气，表示与事实相反。
Theyoungmanmadetheexperimentjustastheteacherhadtaughthim.
Everythingwentonasusualasifnothinghadhappened.
