英語語法：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.