有很多动词是固定搭配,只能接doing或者to do,这些需要自己慢慢积累,自己背。
还有一些动词是两个都能接的,如remember,通常接doing表示已经做过了,to do表示即将要做还没做
通常只记那些只接动名词(不接不定式)作宾语的动词:admit, advise, allow, appreciate, avoid, consider, delay, enjoy, escape, excuse, fancy, finish, forbid, give up, can’t (couldn’t) help, imagine, insist on, keep on, look forward to, mind, miss, need, object to, permit, practise, put off, require, risk, suggest, stop, be worth。
to do 是动词不定式
doing 是动名词
前者是个结构短语形式
后者是个长的词语形式
stop to do sth停下来做另一件事
stop doing sth停止做现在做的事
expct to do
enjoy doing sth.