knock

中文意思

• n. 敲击
• n. 敲门声
• v. 敲击
• v. 碰撞
• v. 批评

英文释义

• 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

词形变化

过去式

knocked

过去分词

knocked

现在分词

knocking

第三人称单数

knocks

例句

1. n. 敲击

   He gave the engine a gentle knock to see if it was working properly.

   他轻敲了一下发动机，想看看它是否运转正常。

2. n. 敲门声

   I was watching TV when I heard a loud knock at the front door.

   我正在看电视，这时突然听到前门传来巨大的敲门声。

3. v. 敲击

   Please knock on the door before you enter the manager's office.

   进入经理办公室之前请先敲门。

4. v. 碰撞

   She accidentally knocked her knee against the edge of the coffee table.

   她的膝盖不小心撞到了茶几边缘。

5. v. 批评

   Don't knock his idea until you have tried it yourself.

   在你亲身尝试之前，不要挑剔他的想法。