Let's listen to music. Let us 是让听话人允许我们做某事 Let‘’s是表示 和听话人一起做某事,表示提建议。
当然两个后边都接动词原型。 其他说法: What about listening to music together? How about listening to music together? Shall we listen to music together? Why not listen to music together? Why don't we listen to music together?