I ____ that she come here soon. A. suppose B. demand C. think D. believe (Nelson)
答案为 B(demand)，但我不明白这里为什么出现了 she come，而不是 she comes.
英语里凡表示要求、建议、意图、决定、推荐等意义的动词，在正式英语里，尤其是在美国英语里，要求其宾语从句使用现在时虚拟语气(现在虚拟式)(其特征是:无第三人称变化，也无时态变化):
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I demanded that John go there at once. (LDCE) 我要求约翰马上去那儿。
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The employees have demanded that the manager resign. (CGEL) 雇员们要求经理辞职。
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They demanded that the right to vote be given to every adult man. (Hazen) 他们要求每个成年人都应有选举权。
具有这种语法特征的动词还有:decide(决定),ask(要求),insist(坚持),order(命令),prefer(宁愿),propose(提议),recommend(推荐、建议),require(要求),request(请求),suggest(建议)。下面让我们举一些例子:
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I ask that he leave. (Evans) 我请他离开。
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I insist that he go. (LDCE) 我坚持让他走。
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The king ordered that the man be released. (Eckersley) 国王下令释放这个人。
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Would you prefer that I come on Monday instead of on Tuesday? (LDCE) 你是否希望我星期一而不是星期二来?
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I propose that Mr. John O'Leary be the chairman. (Yeats) 我提议让约翰·奥利里先生做主席。
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I recommend that everyone buy this dictionary. (LDCE) 我建议大家都买这本字典。
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He requires that they work all night. (LDCE) 他要求他们整夜工作。
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She suggested that I be responsible for the arrangement. (CGEL) 她建议我负责安排这件事。
但是,应当注意,在英国英语中则常常采用 should be 的形式:
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I asked that I should be allowed to see her. (LDCE) 我请求允许我去看她。
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I insisted that he should come with us. (OSD) 我坚持他和我们一起去。
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We strongly suggest that Smith is told about his physical condition as soon as possible. (全国研考)
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The lawyer asked that the case is postponed for one month. (TOEFL)