过去时中 see是加do还是doing?

过去时中 see是加do还是doing? see/watch sb do/doing something ,那么是过去看见的呢,是see sb do 还是 see sb did see后面是加什么[doing还是to do还是did,done] make see spend tell have need 等单词用法,关键是后面加to do 还是do还是doing suggest是加doing还是should do? see sb.后面是跟 do还是doing啊? 过去时after后加did还是doing? Do you mind后面是加do还是doing? look forward to是加doing还是加do? prepare是加doing还是to do是prepare doing还是prepare to do 英语中介词后面加do还是doing find后面是加do还是加doing还是加to do? see后面加to do,还是doing ?拜托了各位 谢谢 see/hear/look sb.do/doing sth.的区别我们老师说,过去和经常做的是用do,正在做的用的是doing,那我有些不明白,如果是看到过去正在做的用do还是doing呢? thank you for 是加doing还是 to do find是加to do还是doing.求用法 think用法thing是加doing 还是 do bear后面是加to do还是doing?