unit 1 How can we become good learners?by介词的用法：1. 表示做某事的方法，by + 名词/代词/ doing , 对其划线提问用howI study English by watching English movies. How do you study English?2. by +交通工具 ，对其划线提问，用howI 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.work with friends 和朋友一起学习 make word groups制作单词卡片 read the textbook读课本 ask sb for h
