汀臭崽儿
knock，tap，rap，pat 这些动词均有“敲、击”之意。knock：指用拳头或其它器械猛敲或猛打；也指用手轻敲某物。tap：多指慢慢地连续地轻击或轻拍。rap：指用手指或木棒等快速地轻敲或急拍。pat：指用手轻拍以示同情、赞同或爱抚。
～*诗情画意*～
knock at the door.To see the manager, knock at the door marked"private". 要见经理，请敲标有“私人的”字样的房间。When I heard the knock at the door, was the frightened out of my senses. 一听见有敲门声我就吓得六神无主。
优质英语培训问答知识库
