2. 外语
  3. You ______ your own sandwiches. I have enough for two.

You ______ your own sandwiches. I have enough for two.

admin2013-02-24  41
问题 You ______ your own sandwiches. I have enough for two.
选项 A、couldn’t have brought
B、mustn’t have brought
C、shouldn’ t have brought
D、needn’ t have brought
答案D
解析 本题考查情态动词推测用法。must与动词完成式搭配表示对过去事实的推测，用于肯定句；若对过去事实作否定的推测，须用(can’t/couldn’t+动词完成式；shouldn’t have brought表示“不应该带来的，现在却带来了”，语气不妥；needn’t have brought表示“不必带来的，现在却带来了”，符合题意：你本来不必带三明治来，我有两个足够了。故D是正确答案。
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大学英语四级

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