Unit 1 How can we become good learners?课文知识点解析“by+doing形式”表示方式、方法语法结构by+doing形式，“通过做.的方式”I learn Chinese by listening to tapes。提问方式by+doing结构常用来回答How do you.？或How can I.?这类句型-How can I turn on the light?-By turning this button.拓展：介词by的其他用法：1）by+交通工具，“乘/坐.” by bus2）by+地点，“在.的旁边；靠近.” by the lake3）by+时间，“截止到.；不迟于.” by ten4）辨析by、with、in，“用”by侧重“用”某种手段、交通工具、传递方式或媒介等with侧重“用”有形工具、材料、内容等in侧重“用”语言、语调、笔墨、颜色等Eg. Well be traveling by car
