作宾语：
1)只加doing:
abandon,give up,admit,acknowledge,confess,advocate,avoid,escape,enjoy,suggest,put off
excuse,appreciate,mention,risk,pardon,resist,tolerate,endure,forgive,forbid,mind,delay
2)省略介词+doing：
feel like doing; be/get used to doing;spend time (on) doing;waste/lose time (in) doing;
be busy (in) doing;have difficulty/trouble (in) doing;there is no point (in) doing;
have fun (in) doing;have a good time (in)doing
3)只加to do:
agree,offer,play,aim,ask,demand,clain,endeavor,manage,determine,
resolve,fail,pretend,refuse,tend,long,prepare,volunteer
4)既可+doing也可+to do, 意思没变化: (like/love/hate/prefer前有would/should时, 只能跟to do)
like,love,hate,prefer, begin,strat,continue,bother,intend,attempt,cease
5)可+doing也可+to do 意思差别很大：
remember/foorrget: to do记得/忘记去做(动作未发生)；doing记起/忘记做过(动作已发生)
regret: to do抱歉做；doing后悔做了某事
try: to do设法做某事；doing试着做某事
mean: to do打算、想要做某事；doing意味着做某事
stop:to do停下来去做另一件事；doing停止正在做当事
go on: to do继续做某事(接着上一件事，中间断开了)；doing继续做正在做当事（一直在做）
can't help: to do不能帮助做某事；doing忍不住做某事
can't stand: to do不忍心做某事；doing不能融通做某事
need: to do某人应该做某事；doing某事应该做
I am busy (in) doing my homework.
He refused to participate the party.
They like having/to have a picnic.
Mike forgeted to wash his clothes.忘记洗衣服了
Mike forgeted washing his clothes.忘记有没有洗衣服
