Knock是很常见的动词指“敲”，“敲门”就会说“knock the door”。除此以外，knock搭配不同介词会产生千变万化的意思。今天就来聊聊，当knock遇上off，会产生哪些“化学反应”？
首先，两个词合并成一个词的时候是knockoff, which means an imitation of something, particularly a well-known product, usually lower in quality and price than the original.山寨货，冒牌货
You can buy a nice knockoff watch from them. 你能从他们那儿买到质量很好的仿制名牌手表。
That song is obviously a knockoff of an earlier recording. 那首歌很明显是以前(过的)曲的盗版。
当两个词分开的时候knock off，就变成一个地道的美式习语，一词十用，内涵丰富，就看你能get多少 ~
1. 打掉，碰掉
She accidentally knocked off the glass。
她不小心把玻璃杯碰掉了。
2. 撞倒，击倒
I knocked him off his feet.
我把他打倒在地。
3. 停止工作，休息，下班：
All the staff knocked off for lunch at twelve o'clock.
所有的员工都在12点钟停止工作去吃午饭。
What time do you
knock off?你们什么时候下班?
4. 减掉，降低(价格)；
The shopkeeper agreed to knock 5 pounds off the price.
店主同意把价格降低5镑。
5. 匆促完成；匆忙写出(文章等)，即席做成：
I've a few letters to knock off this morning.
今天上午我有几封信要赶出来。
He knocks off a speech.
他即兴演讲。
6. 排除，除掉；
The headmaster is trying to knock off every objection.
校长正努力排除一切反对意见。
7. 赢得，获得
He knocked off a Nobel prize.
他获得了一项诺贝尔奖。
8. 杀死，谋杀，干掉
He was knocked off by the gangsters.
他被歹徒谋杀了。
9. 偷(某物)；抢劫(某处)
Who knocked off my purse ?
谁偷了我的钱包呢?
The man who knocked off a bank last night was arrested.
昨天夜里抢劫银行的人被逮住了。
10. 很快吃光(或喝光)
They have knocked off the whole cake in a few minutes!
他们在几分钟内便吃光了那块大蛋糕。
閱讀更多 Joanna有範英語 的文章
