〖思维3〗目的状语从句。常用的引导词有 so that , that , in order that 等，放在主句之后。从句转换成不定式。目的状语从句可以转换为不定式，但只有主句和从句主语一致时，才能直接转换。例如：He works hard in order that he can serve the country well . ( 主从句主语一致可改为：He works hard in order to serve the country well . )
〖思维4〗结果状语从句。引导词有 so… that … , such … that … , 等。放在主句之后，主句表原因，从句表结果。
so 和 such 的用法。so 是副词，后面跟形容词或副词。而 such 是形容词，后跟名词 ( 组 ) 。但当名词被表数量的 many , much , few , little 修饰时，要用 so。例如：There were so many people in the street that we could hardly get through . 另外，可数名词单数，有形容词修饰，可把形容词提到不定冠词前，用 so 修饰形容词。例如：It is such a heavy box that nobody can move it . = It is so heavy a box that nobody can move it .
〖思维5〗条件状语从句。主要引导词有 if , unless ( if … not … ) , as ( so ) long as ( 只要 ) 等。表将来，从句要用现在时态。如：You will fail unless you work harder .
条件的真实性。英语中，条件可分为真实条件和假设条件两种。如果不可能或可能性不大，属于假设条件，需要用虚拟语气。
〖思维6〗让步状语从句。主要引导词有 although ( though ) , as , even if , however , whatever , no matter who ( what ) 等。
让步状语从句的倒装。由 as , though 引导的让步状语从句比较特殊，常使用倒装语序，即将表语或状语提前。如果表语是可数名词单数，要省略不定冠词。例如：
Rich as he is , I don\'t envy him .
Child as he is , he knows a lot .
〖思维7〗方式状语从句。引导词有 as if ( though ) , as , the way 等。
as if 引导的方式状语从句常用虚拟语气。如 : He is talking about the moon as if he had really been there . 但在 It looks as if…, It seems as if … 句型中常用陈述语气。如：It looks as if he is coming .
the way 的用法。the way 后面的引导词常用 that 引导，而且经常省略。一般不用 in which 引导。例如：We didn\'t like the way ______ he treated us . A . which B . where C . that D . in which。此题答案应该是C。
〖思维8〗地点状语从句。主要引导词有 where , wherever , anywhere , everywhere 等。
Where there is a will , there is a way .
I will meet you anywhere you like .
Make marks where you have any questions .
〖思维9〗比较状语从句。常用 The more … the more , as 或 than 引导。
I know more about it than he does .
The more we can do for you , the happier we will be .
〖思维10〗学习状语从句的两点注意：
连词的误用。由于受汉语的影响，同学们常犯的错有 Because … so… , Since … so… , Although ( Though ) … but … 这些连词被重复使用了，应该任去一个。另外，状语从句和主句决不能用 and 连接。如 If you leave it with me , and I will take care of it . 此句应去掉连词 and , \'98NMET 第18题就考查了这个问题。
〖思维11〗状语从句的省略。状主事从句有很多省略情况。其中时间状语、地点状语、条件状 语、方式状语从句常可省略句中主语和 be 动词而只保留形容词、分词、不定式、介词短语等。
While ( she was ) very young , she began to study English .
We will help you whenever ( it is ) possible .
If ( it is ) necessary , ring me at home .