一、复合句型——状语从句
>>状语从句:属于副词性从句,简单说就是从句在句子中担任状语,分为时间、目的、地点、条件、方式、让步、比较、结果、原因9种状语从句.
>>时间引导词:
when,after,before,while,until,till,since,assoonas,everytime,themoment等
>>地点引导词:where,wherever等
>>原因引导词:because,since=nowthat,as等
>>条件引导词:if,whether,unless,aslongas,onconditionthat,providingthat等
>>结果引导词:so/such...that,so等
>>目的引导词:inorderthat,sothat等
>>让步引导词:though,although,however,whatever=nomatterwhatevenif,eventhough,as(倒装)等
>>方式引导词:as,asif等
>>比较引导词:than,as...as,themore...,themore...等
二、复合句型——定语从句
在复合句中作定语,修饰主句中某一名词或代词的从句.
>>结构:先行词+关系词(分为关系副词和关系代词)+从句
>>关系代词(that,who,which,whose,as)
>>关系副词(when,where,why,how)
>>定语从句分为限制性定语从句及非限制定语从句,限定从直接放在先行词后,非限定从与先行词之间要加逗号.
三、复合句型——同位语从句
>>同位语从句是对其前面的抽象名词(例如:idea,insistence,instruction,order,plan,proposal等)进行解释说明,被解释说明的词和同位语在逻辑上是主表关系.同位语从句的结构一定是先行词加引导词加上从句的构成,that并不是唯一可以引导同位语从句的引导词,whether,why,who.从句一定要具有完整的句子结构,主谓宾都必须齐全,引导词不充当任何成分.
>>常见先行词:
belief,fact,hope,idea,doubt,news,rumor,conclusion,evidence,suggestion,problem,order,answer,decision,discovery,explanation,information,knowledge,law,opinion,truth,promise,report,thought,statement,rule,possibility.