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1·I was wakened by a knock at the door.

敲门声把我吵醒了。《牛津词典》

2·They were interrupted by a knock at the door.

他们被敲门声打断了。《牛津词典》

3·You're supposed to knock at the door and wait before entering the office.

进办公室之前，你应该先敲门然后等着。

4·There was a knock at the door.

门外传来敲门声。

5·Suddenly there was another knock at the door.

突然，又有人敲门。

6·Just as breakfast was completed there was a knock at the door.

早饭刚吃完，有人敲门。

7·Just when she was going to bed, there was a knock at the door.

正当她要上床睡觉时，有人敲门。

8·Ring the doorbell or knock at the door before you enter the room.

在你进入房间之前，按一下门铃或敲门。

9·No sooner had she fallen asleep than she heard a knock at the door.

她刚睡着就听到了敲门声。

10·Pinocchio went straight to the Fairy's house, firmly resolved to knock at the door.

皮诺乔径直走到仙女家，打定主意要敲门。

敲门

1·At seven in the evening, the gentleman heard a knock at the door, the villager opened the door.

晚上七点，这位绅士听到有人敲门，村民打开了门。

2·There was a knock at the door just as we were about to have dinner.

我们正要吃晚饭的时候有人敲门。

3·He was just falling asleep when there was a loud knock at the door.

他刚要入睡，就有人大声敲门。

4·There is a knock at the door and when Sean turns to look, the strips are gone.

听到敲门sean转身去看时，贴纸没有了。

5·I heard someone knock at the door.

我听见有人敲门了。