单词	knife
释义	noun | verb knifeknife1 /naɪf/ ●●● S2 W3 noun (plural knives /naɪvz/) [countable] Etymology ETYMOLOGYknife1 Origin: Old English cnif Collocations COLLOCATIONS► kitchen/bread/vegetable etc. knife (=a knife used in the kitchen, for cutting bread, etc.) 1 a tool used for cutting or as a weapon, consisting of a metal blade attached to a handle:  a knife and forkkitchen/bread/vegetable etc. knife (=a knife used in the kitchen, for cutting bread, etc.)2you could cut the atmosphere/air/tension etc. with a knife used to say that you felt the people in a room were angry with each other3go under the knife humorous to have a medical operation4pull a knife (on somebody) to take a knife out of your clothes, where it had been hidden, and threaten someone with it:  Lyons claimed that Bessemer pulled a knife on him.5like a (hot) knife through butter informal used to say that something moves, happens, or is done very easily, without any problem6twist/turn the knife to say something that makes someone who is upset about something even more upset [Origin: Old English cnif] noun | verb knifeknife2 verb [transitive + in] Verb Table VERB TABLE knife Simple Form Present I, you, we, they knife he, she, it knifes Past I, you, he, she, it, we, they knifed Present perfect I, you, we, they have knifed he, she, it has knifed Past perfect I, you, he, she, it, we, they had knifed Future I, you, he, she, it, we, they will knife Future perfect I, you, he, she, it, we, they will have knifed Continuous Form Present I am knifing he, she, it is knifing you, we, they are knifing Past I, he, she, it was knifing you, we, they were knifing Present perfect I, you, we, they have been knifing he, she, it has been knifing Past perfect I, you, he, she, it, we, they had been knifing Future I, you, he, she, it, we, they will be knifing Future perfect I, you, he, she, it, we, they will have been knifing to put a knife into someone’s body SYN stab
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