如何判断时间状语从句、条件状语从句、让步状语从句、方式状语从句?答：在复合句中,修饰主句中的动词、形容词或副词等的从句叫状语从句.状语从句根据它表达的意思可分为时间、地点、原因、目的、结果、让步、比较（或方式）和条件等类.时间状语从句：状语从句需要连词引导.引导时间状语从句的连词有：when,while,as,as soon as,before,once,after,since,till/until等.例如：When you finish doing this drill,you may go on to the next one.I'll let you know as soon as it is settled.She has written fifty letters home since she came to Beijing.让步状语从句：让步状语从句常用although/though（虽然）,even though/even if（尽管）,as（尽管）,whatever/whenever/however（无论什么/何时/如何）,no matter what/when/how（无论什么/何时/如何）等引导.as表示让步时一般用于部分倒装结构,though也有此用法.例如：We'll try our best to finish the work in time though we are short of materials.He still wanted to do it although I warned him not to.Although she slept ten hours last night,she is still tired.Although the road was narrow,the driver managed to pass it safely.方式状语从句:方式状语从句常由as if/as though（好像,如同）等.例如：She acted as if/though nothing had happened.She always talks to him as if she were/was his sister.It looks as if it'll rain.He treats me as if I am/were his brother.条件状语从句：一般由if（如果）,unless（除非,如果不）,as/so long as(只要)等连词引导.
状语从句 试题讲解 什么叫时间状语从句、条件状语从句、让步状语从句、方式状语从句?