- 进来之前请敲门。
Please knock before you come in.
- 当幸福来敲门的时候。
When happiness comes knocking at your door.
- 有人敲门了。
Someone knocked on the door.
- 请你不要不敲门就进来。
Please do not enter the room without knocking.
- 他被啪啪的敲门声吵醒了。
He was roused by a loud knocking at the door.
- 你进入我的房间之前都要敲门。
You are always to knock before entering my room.
- 你进入我的房间之前都要敲门。
You are always to knock before you come into my room.