listen (to)用来表示注意正在持续发出的声音。这个词强调集中注意力，想尽量听清楚。你即使不想听，也能hear某个声音。但你只能有意识地listen to某个声音。试比较： e.g.I heard them talking in the next room,but I didn't really listen to what they were saying. 我听见他们在隔壁房间里谈话，但我实在没有去听他们在说什么。 e.g.Listen very carefully,please. 请注意听。...
