1. in order to

He worked very hard in order to realize his dream.为了实现他的梦想，他学习非常努力。

2. in order that

She worked hard in order that everything would be ready by 6 o´clock……她拼命干活以便到六点时把一切都准备就绪。

3. so…that

They were all so tired that they could do nothing but yawn.他们太累了，除了伸懒腰什么都做不了了。

4. such…that

It was such a cold day that there was nobody on the street.天气非常冷，以致于街上一个人都没有。