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单选题
29.He must have stayeduplate last night, he?
A
A. mustn＇t
B
B.needn＇t
C
C.hasn＇t
D
D.didn＇t
答案解析
正确答案：D
解析：
29.【翻译】他昨天晚上一定敖夜了，不是吗？【精析】D ①11 must +动词原形”表示对现在情况的推测时，反意疑问句部分通常要根据must后面的动词采用相 应的形式;②must have +过去分词”表示对过去情况的推测，且句中有明确的表示过去的时间状语时，反意疑问句部 分要根据陈述句部分谓语的情况用“didn＇t +主语"或“wasn＇ t/weren＇ t +主语"；3"must have +过去分词”表示对过 去情况的推测，且句中没有明确的表示过去的时间状语时,反意疑问句部分要用“haven＇t/hasn，t +主语” 一根据句中 的must have stayed up和时间状语last night可知，此处是对过去情况的肯定推测，所以反意疑问句部分应用didn＇t ： 故选D。解答此类试题时，若陈述句部分的must表示推测意义，可将其变为表达事实的句子，然后根据该句确定反 意疑问句部分。例如：题干变为表达事实的句子He stayed up late last night,所以反意疑问句部分应用didn＇t he.
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