1.so(that)引导的结果状语从句

The Aswan High Dam controls the waters of the Nile so that they now run regularly all through the year．(人教大纲版高一上第124页)

阿斯旺大坝控制着尼罗河河水，因此河水得以终年驯服地奔流不息。

He had over slept，so that he was late for work．

他睡过了头，结果上班迟到。

提示：

so that还可以引导目的状语从句。(参见目的状语从句)结果状语从句表达的是事实，而不是推论;目的状语从句表达的事情尚未成为现实。从语法结构看，目的状语从句常常需要情态动词(can，could，may，might，should，will，would)。请对比:

We paid him immediately，so(that)he left contented．(表结果)

我们立即给他付了款，结果他满意地走了。

We paid him immediately so(that)he would leave contented．(表目的)

我们立即给他付了款，以便他满意地离去。

有的时候，结果状语从句也可带有情态动词，这个时候我们就要根据句意和上下文来确定。

My pencil fell under the desk，so that I couldn't see it．

我的铅笔掉到桌子底下了，所以我看不到。

Darkness had fallen and a cold wind was blowing，so(that)the streets were deserted．

夜幕降临，刮起了刺骨的寒风，街上杳无人迹。

He wanted to make American English different from British English，so he changed the spelling of many words．(人教大纲版高一上第13页)

他(韦伯斯特)想要区别美国英语和英国英语，所以改变了许多单词的拼法。

It was still painful，so I went to see a specialist．

还是很疼，所以我找了个专门医师看了看。

提示：

有的时候so that一起去掉，上下句仍是因果关系。

Everything went so fast，she couldn't think．(人教大纲版高一上第24页)

一切发生得那么快，容不得她思考。