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2019中考英语一轮复习by介词用法

1. 表示做某事的方法，by + 名词/代词/ doing , 对其划线提问用how

I study English by watching English movies. How do you study English?

2. by +交通工具 ，对其划线提问，用how

I go to school by bike. How do you go to school.

3. by+时间， 不迟于，在…之前

Please reply to my letter by Friday.

4. by 在…旁边 The teacher is standing by the window.

5. by在被动语态中，引出动作的执行者：The book is written by Lu Xun.