如何区分动名词和现在分词?After putting it on,Mrs.Richards went downstairs.(此句中的putting为动名词还是现在分词,如何区分?）After giving me a letter,Tom went back to his desk.(此句中的giving为动名词还是现在分词,如何区分?）
问题描述：
如何区分动名词和现在分词?
After putting it on,Mrs.Richards went downstairs.(此句中的putting为动名词还是现在分词,如何区分?）
After giving me a letter,Tom went back to his desk.(此句中的giving为动名词还是现在分词,如何区分?）
答
因为after是介词，介词后固定用动名词形式。现在分词主要起修饰作用。
答
这两个都是现在分词作状语,说明时间
现分一般在连词之后作状语,也可位于名词前后作定语
作状语时,表主动.可转为相应的从句,如：After giving me a letter,Tom went back to his desk.=After Tom gave me a letter,Tom went back to his desk.
作定语如：a man sleeping in my bed.睡在我床上的男人.
动名词相当于名词在句中作主,宾,表成分.
如：i like swimming.
swimming 就是动名词,作like的宾语.