rap on (something)

To strike something with one or more quick, light blows, as when getting someone's attention; to knock or tap at something swiftly and lightly. I thought I heard someone rapping on my window in the middle of the night, so I was wide awake with fear until morning! The wind was causing a tree branch to rap on the door in a most unsettling manner.

词组	rap on (something)
释义	rap on (something) rap on (something) To strike something with one or more quick, light blows, as when getting someone's attention; to knock or tap at something swiftly and lightly. I thought I heard someone rapping on my window in the middle of the night, so I was wide awake with fear until morning! The wind was causing a tree branch to rap on the door in a most unsettling manner. See also: on, rap Farlex Dictionary of Idioms. See also: a slew of (something) (one) could use (something) (I) wouldn't (do something) if I were you (one) never would have guessed (one) doesn't give a rip (about something) all right (one) doesn't give a hoot (about something) a/the feel of (something) (one) won't hear of (something) a straw will show which way the wind blows
随便看	if you chase two rabbits, you will not catch either one if you don't have anything nice to say, don't say anything at all if you don't like it, lump it if you don't make mistakes, you don't make anything if you don't mind If you don't mind! if you don't mind me asking if you don't mind me/my saying so... if you don't mind me saying (so) if you don't mind my asking if you don't mind my saying (so) if you don't see what you want, just ask (for it) If you don't see what you want, please ask if you don't see what you want, please ask (for it) if you get my drift if you get my meaning if you have a mind to (do something) if you keep your mouth shut, you won't put your foot in it if you know what I mean if you know what's good for you if you lie down with dogs, you will get up with fleas if you lie with dogs, you will get fleas if you like if you'll pardon the expression if you must