目的狀語從句

表示目的狀語的從句可以由that, so that, in order that, lest, for fear that, in case等詞引導(dǎo)，例如：

You must speak louder so that /in order that you can be heard by all.

He wrote the name down for fear that(lest) he should forget it.

Better take more clothes in case the weather is cold.