一下两句话分别加了for和不加for：The forests stretch for hundreds of miles. 森林曼延数百哩。《汉英大词典》Students often travel hundreds of miles to get here. 学生常常赶数百英里的路来到这里。《柯林斯高...
副词 never 通常是应该放在系动词be之后。比如下面的句子都是出自一本语法书：He is never behind with his work. 他工作从不拖拉。The house was never clean nor tidy. 房子从不干净，也不整齐。She was never too...
home用作副词时，最通常连用的介词是at。如：Jane works at home. 简在家工作。 He found it impossible to study at home. 他觉得不可能在家学习。If it rained tomorrow, we’d stay at home. 如果明天下...