前有do后无to 前无do后有to 一般规则.
i didn't say anything but to ask him to leave.
i can't do anything but listen to music.
但是也不一定.
i can't help but do sth.
前有do后无to 前无do后有to 一般规则.
i didn't say anything but to ask him to leave.
i can't do anything but listen to music.
但是也不一定.
i can't help but do sth.