knocked on的用法和樣例：
例句
- He knocked on the wall and she knocked back.
他敲了敲牆壁，她在隔壁應聲回敲。 - My idea of taking Sue out to the cinema is knocked on the head.
我想約蘇出來看電影的計劃泡湯了。 - I duly knocked on his door at three o'clock.
我準時在三點鐘敲了他的門。 - He accidentally knocked on (the pass from Jones).
他非故意犯規，用手向前擊了(從瓊斯傳來的)球。
