cosh sb
及物动词，后面直接接被打的人，不需要加介词。
The attacker coshed his victim and ran off.
袭击者用短棍打了受害者，然后逃走了。
用短棍（或警棍等）击打；用粗短棍打
coshing — present participle of cosh
用此类武器击打。；用短棍打；用棍棒打
To strike someone with a heavy short stick or similar weapon.
用此类武器击打。
To strike with a weapon of this kind.
一般现在时
He coshes the thief.
他用短棍打小偷。
一般过去时
She coshed him yesterday.
她昨天用短棍打了他。
现在完成时
They have coshed the attacker.
他们已经用短棍打了攻击者。
规则动词
The mugger coshed his victim on the head and stole his wallet.
那个抢劫犯用短棍击打受害者的头部，偷走了他的钱包。
用法提示：动词coshed表示用短棍击打的过去式动作。
Police reported that the assailant had coshed the security guard before fleeing.
警方报告说，袭击者在逃跑前用短棍打了保安。
用法提示：动词coshed与助动词had构成过去完成时，表示动作发生在过去另一动作之前。
He was coshing anyone who got too close to his hiding spot.
他用短棍打任何靠他藏身之处太近的人。
用法提示：动词coshing是现在分词形式，与was构成过去进行时，表示持续动作。
及物动词，后面直接接被打的人，不需要加介词。
The attacker coshed his victim and ran off.
袭击者用短棍打了受害者，然后逃走了。
要说明击打的部位时，常用 cosh sb over/on the head 这一结构。
Someone coshed him over the head from behind.
有人从背后用短棍击打他的头部。
被动语态多用于新闻报道，重点在于被打的人而不是动手的人。
The guard was coshed by two men outside the bank.
警卫在银行外被两名男子用短棍击打。
grammar · medium
易错句子Two men cosh him outside the pub last night.
正确表达Two men coshed him outside the pub last night.
cosh 是规则动词，过去式在词尾加 -ed 构成 coshed；汉语动词不随时态变化，容易漏掉 -ed 而误用原形。
grammar · medium
易错句子She coshs the intruder and calls the police.
正确表达She coshes the intruder and calls the police.
以 -sh 结尾的动词，第三人称单数要加 -es 而不是只加 -s，所以是 coshes。
grammar · medium
易错句子The attacker coshed his head from behind.
正确表达The attacker coshed him on the head from behind.
英语表示“打某人身体某部位”用 cosh/hit sb on the head：宾语是人，身体部位前用定冠词 the，不用物主代词 his，否则会被理解为“打自己的头”。
bash 泛指用力打，口语常用，打人或打物都行，不限于武器；cosh 则专指用短棍、警棍击打，多见于英国英语。
clobber 是英国口语，语气随便，也可指比赛里彻底击败对手；cosh 语气中性偏新闻体，只表示用短棍击打这一具体动作。
bludgeon 强调用沉重钝器反复击打，常带胁迫、压制的意味；cosh 只指用短棍打这一动作，本身不含胁迫含义。
cosh + -ing（动名词/名词）
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