状语从句可以用下面这些东西表示：
副词：theoretically you're right,but things may not work like that in fact.
介词短语：she did this out of kindness.
不定式（短语）they did everything they could to save the worker's life
i am very pleased to have made your acquaintance.
分词（短语）please fill in the card giving all the informatin required.
compared to many women,she was indeed very fortunate.
形容词：they all rushed over,eager to help.
词组：she jumped ten feet.
when i was ill she nursed me day and night
复合结构：that being the case,we'll have to reconsider the whole thing.
从句：we did it only because we had to.
状语间或可以用名词表示.we have been sitting here hours waiting for you.
用副词表示的状语可以用来说明时间、地点
、行为方式、程度或其他东西.
介词短语做状语的时候特别多,他们可以表示时间、方式、地点或其他东西.
不定式引起的状语可以修饰动词.
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