listen to sb do sth / listen to sb doing sth 辨析
listen to sb do sth / listen to sb doing sth
这两种说法,都能查到.应该是存在的.那请问,
1 listen to sb do sth.这里 do 前面是不是 属于省略了 不定式to
2 listen to sb do sth / listen to sb doing sth 大体上有何区别.