there is no light in the dormory(宿舍).They must have gone to

ghostking1882022-10-04 11:39:542条回答

there is no light in the dormory(宿舍).They must have gone to the lecture,___?A.didn't they B.haven't they

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加啡猫摆酷共回答了16个问题 | 采纳率81.3%: 宿舍里没有灯光,他们必定是去听讲座了,不是吗?
这儿的反意疑问句中must have done 是表推测判断的,have作助动词,类似于do 的用法,故用haven't they.类比They cannot have gone to the lecture,have they?（否定的推测与判断）; 1年前

taxi_driver 共回答了7个问题 | 采纳率: 选B; 1年前

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there is no light in the dormory(宿舍).They must have gone to there is no light in the dormory(宿舍).They must have gone to the lecture,___?A.didn't they B.haven't they答案是B可是为什么啊 何必承诺_qq1年前2: boboaijunjun 共回答了20个问题 | 采纳率90%

宿舍里没有灯光,他们必定是去听讲座了,不是吗?
这儿的反意疑问句中must have done 是表推测判断的,have作助动词,类似于do 的用法,故用haven't they.类比They cannot have gone to the lecture,have they?（否定的推测与判断）

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