knock at a door和knock on a door的区别是什么

knock at a door和knock on a door的区别是什么 knock at the door 和 knock on the door有什么区别吗详解,谢 knock at the door和knock on the door到底有什么区别? 1.He raised his hat ___ his head in order to let me find him in the crowed.A.on B.over C.above D.behind ( B.C 哪一个呢?好难区分哦） 2.I hear someone ___ at the door .Please go and see who ___ is.A.knock,it B.knocking it C.knocking,he D.knoc knock at the door造句 Listen,someone______(knock)at door they were i______ by a knock at the door There was a knock at the door.(改为同义句)_____ ______ ______ the door. Listen!I hear someone knocking at the door.Listen!_____ ______ a knock on the door. Listen:Someone ______(knock) at the door. was interrupted by a knock at the door 我想问BY后面应该是个名词形式,为什么KNOCK不变KNOCKING? 27 If nobody answers the door bell ,try ___ the back door.A to knock at b.to knock c.knocking at d.knocking 需要详细分析 knock at the door敲门应该是knock at the door,有时也看到有用knock on the door的,还有是不是可以直接说“knock the door呢? He heard a ___ knock at the door.A.loud B.loudly C.suddenly D.quite 翻译 After a while ,a loud knock at the door woke me up A knock at the door __him .A,interrupted B was interrupted C interrupting D was interruping 关于knock at the door.为什么不是knock the door? at表示什么? one night,they sit down for dinner and there is a knock at the door.