如何区分动名词和现在分词?

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。