191　cut off，cut down，cut out和cut in

① cut off意为“切断，中止，关掉”，指因某种主观或客观原因，停止或中断某物的供应、联系或通信联络。cut off可用于主动语态或被动语态。

They've cut off the water supplies of the city. 他们已切断了这个城市的供水。

Their talk was cut off by a knock at the door. 他们的谈话被敲门声中断了。

He has cut the motor off. 他已经关掉了发动机。

② cut off还可以表示“切开，剪掉，使死去”。

She cut off a mooncake and gave them to the children. 她切了一块月饼，分给孩子们。

He was suddenly cut off by heart attack. 他因心脏病发作而突然死去。

③ cut down意为“使……降价，减价”，常指通过讨价还价等方式使卖主降价。cut是及物动词，后可跟某人或价格，cut down by… 表示降价多少，cut down to表示降价到多少。

In the end we cut him down. 最后我们使他降了价。

He asked too much for the chairs，but I managed to cut the price down by 3 dollars. 这些椅子他要价太贵，但是我终于让价格下降了3美元。

They were gradually cut down to 20 dollars. 他们的要价被逐渐降到20美元。

④ cut out指完全地“停止，放弃”。

He has cut out gambling.（=He no longer gambles. He has stopped gambling.）他不再赌博了。（完全放弃了）

He has cut down（on）gambling.（=He now gambles less often than before.）他现在赌博比以前少了。

⑤ cut in指“插嘴”。

He always cuts in when other people are talking. 别人讲话时他总爱插嘴。

提示

cut构成的常用短语：

cut short 打断，中断

cut into 打断；插嘴

cut through 穿过

cut back 减少；停止

cut up 切成碎片