what's on tonight?on的词性和意思

WHAT'S ON TAP FOR TONIGHT what's on tonight?on的词性和意思 Do you know what's on tonight by any chance? what's on movie tonight这句话对吗 我看又直接用what's on tonight 的 今晚上映什么节目(what's on tonight)中的on的词性?这里的on如何解释？ what is on television tonight.on television是什么意思 What's on TV tonight?-() A,anything interesting B nothing interesting What's on TV tonight?-() A,anything interesting B nothing interesting what's going on... What's going on? What’s going on? What's going on What’s going on. what's on sale? What's goin' on what`s on what's goin on? what's on it