1、动名词作主语往往表示经常性、习惯性的动作，如painting is his hobby.动名词作主语和不定式作主语一样，也可以用it作形式主语，如it is no use talking without doing
2、动名词作表语用来表示主语的内容，主要是对主语内容的进一步说明和解释，如my favorite sport is swimming，我最喜欢的运动是游泳
3、英语中有些及物动词只能接Ing形式的宾语，这些动词有miss, mind, enjoy, escape, practise, suggest, keep, avoid, escape, appreciate, advise, risk, finish等等
4、有些动词即可用不定式也可用动名词作定语，但意义上有差别，这些动词有remember, forget, stop, mean, try , regret, learn, go on等等
5、need, demand, want, require表示需要，be well worth doing表示值得做， 它们是主动形式表被动含义，如this book is well worth reading
6、当动名词的逻辑主语是代词时，一般使用形容词性的物主代词形式，如he forget about my asking him to attend my wife's birthday party
