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It was fine yesterday so I ______ the trouble to carry my raincoat with me.

A.don’t need to takeB.mustn’t have taken
C.didn’t need to takeD.needn’t have taken

C

解析试题分析:考查need的用法:句意:昨天天很好,所以我不必费事带雨衣。因为是昨天的事情,用过去时,didn’t need to do,A项的时态错误,Bmustn’t不能用于+have done的结构,D。needn’t have done本不必做而做了。都不符合句意。选C。
考点:考查need的用法
点评:"need"既可做实义动词又可做情态动词. need 当做实义动词时,后面的不定式必须加to,说明:need + n./ need to do sth,need 当做情态动词时,只能用于疑问句,否定句和条件句,说明:用原形后面只加do,否定形式为 need not,needn’t have done本不必做而做了。didn’t need to do过去不必做….

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