1 跟动名词(doing)和动词不定式（to do）均可的词,含义无区别：
start,begin,continue,prefer,like,love,hate,后跟to do 表具体和特定的动作后跟 doing 表泛指的动作
2 跟动名词(doing)动词不定式（to do）均可的词,含义区别较大：
1.stop to do---stop doing mean doing
2.mean to do---mean doing
3.try to do---try doing
4.agree to do---agree to sb doing
5.be afraid to do---be afraid of doing
6.remember to do---remember doing
7.forget to do---forget doing
8.allow/permit/advise sb.to do---allow/permit/advise doing
9.regret to do---regret doing
10.want to do---want doing (表被动)
11.need to do---need doing(表被动)
12.go on to do---go on doing
13.can’t help to do---can’t help doing
14.forbid sb.to do=forbid sb’s doing---forbid doing
