1·I was wakened by a knock at the door.
敲门声把我吵醒了。
—— 《牛津词典》
2·They heard a knock at the front door.
他们听到前门有一敲门声。
—— 《柯林斯英汉双解大词典》
3·They were interrupted by a knock at the door.
他们被敲门声打断了。
—— 《牛津词典》
4·Late that evening, there was a knock at the door.
那天深夜，有人敲过门。
—— 《牛津词典》
5·I'm sure luck will knock at your door!
我相信幸运会敲你的门！
6·There came a crazy knock at the doctor's office door.
医生办公室传来一阵疯狂的敲门声。
7·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。
8·There was a knock at the door.
门外传来敲门声。
9·Suddenly there was another knock at the door.
突然，又有人敲门。
10·Who would knock at his own door if he was staying alone?
如果一个人呆着，谁会去敲自己的门呢？
1·Late that evening, there was a knock at the door.
那天深夜，有人敲过门。
—— 《牛津词典》
2·Who would knock at his own door if he was staying alone?
如果一个人呆着，谁会去敲自己的门呢？
3·Months later, I heard a loud knock at my door.
几个月后，我听见有人用力敲我的家门。
4·But, at the same time certain facts arise, compel recognition, and knock at the door in their turn.
可是与此同时，某些既成事实又冒出了头，要求人们承认，并敲着它们旁边的门。
5·I had gone downstairs at three o 'clock to fetch a jug of water; and was passing through the hall with it in my hand, when a sharp knock at the front door made me jump.
我在三点钟下楼去拿一罐水，正在提着水罐走过大厅时，这时前门一阵猛敲使我吓一跳。