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1、英语语法状语从句一、概念1.定义：在主从复合句中，用于修饰主句中动词、形容词或副词的句子，叫状语从句。2.类型：状语从句按其在句中的作用分为：时间、地点、原因、目的、结果、条件、方式、让步、比较状语从句九类。3.位置：由从属连词引导，可位于主句前，亦可位于主句后。位于句首时，用逗号与其后的主句隔开。状语从句的构成简单句+并列连词+简单句状语从句的分类时间状语从句WhenIgothome,Peteriscooking.条件状语从句Ifwecanchangeourthoughts,wecanchangetheworl
2、d.让步状语从句Althoughtheworldisfullofsuffering,theycanalwaysbeovercome.原因状语从句Peoplewithgoalssucceedbecausetheyknowwheretheyaregoing.方式状语从句地点状语从句目的状语从句结果状语从句比较状语从句一.时间状语从句（1）主将从现I‘llringupassoonasIgettoBeijing.(2)when主句和从句动作同时发生before之前after之后as并行发生，不分先后（3）untilti
3、ll引导的时间状语从句A动词是延续性动词，主句为肯定I‘llwaitforyoutillyoucometoseeme.B动词是非延续性动词not…untilIdidn’tgotobeduntilIfinishedmyhomework.（4）since自…以来主句用一般现在时或现在完成时，从句用一般过去时Ithasbeen…+since从句Itisbeen…+since从句IhaveworkedinthisschoolsinceIgraduatedfromBeijingUniversity.Itis10yearss
4、inceIbegantostudyEnglish.二：条件状语从句（1）主将从现I’llvisittheGreatWall,ifitdoesn’traintomorrow.(2)if引导的条件状从所表示的前提或条件将来可以实现主将从现在完成时进行时Wewillgiveyouagoodpriceifyouarethinkingofbuyingit.(3)祈使句+andor引导的结果状从，祈使句在意义上一个条件条件状从Useyourhead,andyou’llfindaway.=Ifyouuseyourhead,
5、you’llfindaway.三原因状语从句1becausesinceas(语气由高到低)引导why的提问用because回答Whyareyoulate?BecauseI’mill.2since用在人们已知道的实施“既然”Sinceyoucan’tanswerthequestion,youcanasksomeoneforhelp.四目的状语从句（1）由sothat,inorderthat等引导，谓语中常有may,might,can,could,will,would等情态动词。Hemustgetupearlysot
6、hathecancatchthefirstbus.inorderthat+从句inorderthat+动词Heworkeddayandnightinorderthathecouldsucceed.Heworkeddayandnightinordertosucceed.五结果状语从句(1)so…that,such…thatso+adjadv+thatso+adj+aan+单数名词+thatSuch+aan+adj+单数名词+thatSuch+adj+复数名词+thatSuch+adj+不可数数名词+thatS
7、heissuchalovelygirlthatweloveherverymuch.Sheissolovelygirlthatweloveherverymuch.Wehavesomuchtimethatwecanfinishtheworkverywell.当名词前面有many和much修饰时，用so而不用such（2)so…that的否定形式可与too…tonot…enoughto替换。Heissoyoungthathecan’tgotoschool.=Heistooyoungtogotoschool.=Heisn
8、otoldenoughtogotoschool.六让步状语从句thoughalthough七比较从句thanas八方式状语从句as,likeasthough,theway九地点状语从句where,wherever,everywhere1Themeetingdidn'tstart___everyonewasthere. A.becauseB.untilC.whyD.if2T
