像finish to do sth finish后不是可以加动词不定式吗

finish 有加to do sth Did you finish doing your homework中do为什么加ing,did后不是加动词原形吗 是finish to do sth还是finish doing sth finish doing sth和 finish to do sth的区别? finish doing sth 和finish to do sth的区别 finish to do sth.与 finish doing sth.的区别 是finish doing sth.还是finish to do sth, finish to do sth还是doing sth finish doing sth和 finish to do的区别? to do sth 的sth 做什么成分[即不定式后加了动词原形后的名词】 finish的用法?finish后接to do,还是doing? 为什么一些动词后可以加to do sth和doing sth 而有一些只能加to do?