knock

nɒk

自考高考 Collins 3

n. the sound of knocking (as on a door or in an engine or bearing)
n. negative criticism
n. a vigorous blow
n. a bad experience

n. 敲, 敲打, 敲门
v. 敲击, 互撞, 攻击

Collins 星级

Oxford 级别

1,958

BNC 频率

2,087

使用频率

knock 这个词没有明显的词根词缀，属于简单词汇。可以关注它的发音和拼写来帮助记忆。

例句

1. Please knock on the door before entering.

进入之前请先敲门。

2. I heard someone knock at the window.

我听到有人敲窗户。

3. Don’t forget to knock when you visit my house.

访问我家时别忘了敲门。