由by doing sth．结构谈介词by的用法

【摘要】 <正>在新目标九年级教材Unit 1中有这样的句子:—How do you study for a test?—I study by working with a group.这句话中的by是介词,用来表示方法、手段、方式,意思是"凭借,靠,用,通过",后接动词的-ing形式。例如:She made a living by working as a waitress.她靠当侍者挣钱谋生。更多还原