knock on the door
collocation敲门
She knocked on the door twice.
她敲了两次门。
敲；叩
先理解核心含义，再看它在真实句子里的用法。
敲；叩
to rap your knuckles against something such as a door or wood
I knocked on the door three times.
我敲了三下门。
用指关节敲击某物,尤指木头。
To rap one's knuckles against something, especially wood.
将球踢向另一名球员；传球。
To kick a ball towards another player; to pass.
将球击入比赛区域。
To hit a ball into play.
通过申报手中的杂牌点数低于一定数额来结束一局。
To end play by declaring one's hand to have under a certain amount of deadwood.
knock
Base
原形
knocks
3rd person
第三人称单数
knocking
-ing
现在分词
knocked
Past
过去式
knocked
Past participle
过去分词
He knocks on the door every morning.
他每天早上敲门。
She knocked the cup off the table.
她把杯子碰下了桌子。
Someone is knocking at the window.
有人在敲窗户。
Knock 常用作敲击或碰撞，注意区分及物与不及物用法。
She accidentally knocked the vase off the table.
她不小心把花瓶碰下了桌子。
The boxer knocked his opponent to the ground.
拳击手把对手击倒在地。
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Missing: Usage patterns
Complete this area with usage patterns.
Includes Common mistakes & Confusing words
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敲门
She knocked on the door twice.
她敲了两次门。
进门前敲门
Please knock before entering.
请进门前敲门。
敲敲木头（迷信中认为可以避免厄运）
He knocked on wood after saying he was never sick.
他说自己从不生病后，敲了敲木头。
把球传给队友
He knocked the ball to a teammate.
他把球传给了队友。
把球击入比赛区域
The batter knocked the ball into play.
击球手把球击入了比赛区域。
老天保佑；但愿好运
I haven't been sick all winter, knock on wood.
我整个冬天都没生病，老天保佑。
别闹了；住手
Knock it off, you two! I'm trying to work.
你们两个别闹了！我要工作。
请便；别客气
Do you mind if I use your phone? Knock yourself out.
我用一下你的电话可以吗？请便。
咚咚咚！谁呀？——这是英语里“敲门笑话”的标准开头，属于美英流行文化中的经典玩笑句式。
Someone knocked on the door three times.
有人敲了三下门。
敲，敲，敲响天堂之门——出自鲍勃·迪伦的经典歌曲《Knockin' on Heaven's Door》。
Please knock before entering the room.
进房间前请先敲门。
Use knock naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
knock 里的 k 不发音，读作 /nɑk/，像敲门声“叩”，联想用指关节叩木头。记住：k 静音，动作是敲。
语域：neutral 常见场景：knocking at a door、rapping on a wooden surface、before entering a room 此条分析的是“用指节敲击（尤指门或木面）”这一常用义项。该词在此义项下为中性表达，通常用于日常口语和一般书面语，比如敲门或敲击木面；在正式公文或学术语境中较少出现。
及物动词时后接宾语，不及物动词时后常接介词on/at表示敲击，接into表示碰撞。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.