在前面两篇文章中英国翰思教育小编已向大家介绍了复合句式中的名词性从句和定语从句，今天来介绍最后一种复合句，即状语从句。状语从句也就是从句在复合句中做状语，通常可放在句首或句尾，放句首时一般用逗号隔开。状语从句一共有9种，每一种在复合句中所作的成分不同，从而决定了状语从句的类别。这9种状语从句分别是时间状语从句、地点状语从句、原因状语从句、目的状语从句、结果状语从句、方式状语从句、让步状语从句、条件状语从句以及比较状语从句。接下来我们分别介绍每一种。
1.时间状语从句
引导词：when, while ,as, since, after, before, as soon as, once, the moment, no sooner… than…, hardly…when等。如：
Don’t be afraid of asking for help when it is needed.
What have you been doing since I last saw you?
He had no sooner got to the lab than he set out to do the experiment.
2.地点状语从句
引导词：where, wherever, everywhere. 如:
You should make it a rule to leave things where you can find them again.
She found her calculator where she lost it. 他在她丢的地方找到了计算器。
Everywhere they went, the distinguished guests were warmly welcomed.
在地点状语从句中，where译为在这个地方，要注意区分与作为疑问词和引导定语从句时的不同。
3.原因状语从句
引导词：because, since, as, now that, considering that, in that. 如：
Jane wore a raincoat because it was raining.
Since you have seen both fighters, who do you think will win?
As it is raining, I’ll not go out.
Now that you’ve got a chance, you might as well make full use of it.
Considering that he’s only been learning English a year, he speaks it very well.
其中，since和as既可以引导时间状语从句又可以引导原因状语从句，所以判断时需要依据语义逻辑来判断。
4.目的状语从句
引导词：that, so that, in order that, for fear that, lest
These men risk their lives in order that we may live more safely.
Drive carefully (so) that everyone can enjoy a long life.
目的状语从句的引导词一般直接译为为了，以至于，以免。
5.结果状语从句
引导词：so that, so…that…,such…that… 如：
He worked hard so that he passed the exam.
The film was so wonderful that we wanted to see it again.
He spoke for such a long time that people began to fall asleep.
目的状语从句和结果状语从句看似从句意上非常相似，但是，使用时要注意，目的状语从句中通常使用情态动词+动词原形，而结果状语从句一般多用过去式表结果。
6.方式状语从句
引导词：as, as if, as though, the way. 如：
You must do everything as I do.
He walked slowly as if he had hurt his leg.
It looks as if it is gong to rain.
I don’t like the way you speak to her.
以上引导词中as译为正如…, as if/ though 译为好像…
7.让步状语从句
引导词：though, although, even if, even though, as, whatever, wherever, whoever 以及no matter +wh-疑问词等
Although journalism seems like a good profession，I would prefer to be a teacher．
No matter how pure the water looks, I prefer not to drink it.
让步状语从句中引导词一般译为尽管，虽然，无论…
8.条件状语从句
引导词：if, unless, as long as, in case, if only, providing that等
You will be late unless you leave immediately.
If you don’t hurry up, you’ll be late. 如果你不快点，你就会迟到了。
条件状语从句中需要注意时态使用规则，一般遵循主将从现，即主句用一般将来时，从句用一般现在时表将来。
9.比较状语从句
引导词：as…as, not the same as, than, not so…as… 如：
The director gave me a better offer than he gave Dick.
I can’t run as/so fast as he can. 我不能跑得他那样快。
比较状语从句中引导词表比较，than译为“比”，as…as… “和…一样”， 表否定在前面加not，表示前者不如后者….
以上即是9种状语从句的基本介绍，实际运用中需要先熟悉引导词的含义，使用时应该使用的时态规则，从而在留学生论文写作中选择恰当的从句来提高论文的丰富度和多样性。
