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2013中考英语备考：虚拟语气的构成(必背重点)

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    I. 要点
    表示说的话不是事实，或者是不可能发生的情况，而是一种与愿望、建议或与事实相反的假设等。一般常用于正式的书面语中。
    1、虚拟语气的构成

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    注：如果条件从句谓语动词包含有were或had, should, could有时可将if省去, 但要倒装。如：
    Had you (If you had) invited us, we would have come to your party.
    2、虚拟语气在各种从句的应用
    (1) 在主语从句中用来表示惊奇、惋惜、理应如此等，其谓语形式是"should(可省) +动词原形"，常用于以下三种句型中。
    句型一：It is necessary (important, natural, strange, etc) that…
    句型二：It is a pity (a shame, no wonder, etc) that…
    句型三：It is suggested (requested, proposed, desired, etc) that…
    如： It is strange that he (should) have done that.
    It is a pity that he (should) be so careless.
    It is requested that we (should) be so careless.
    (2) 在宾语从句中用于suggest, propose, move, insist, desire, demand, request, order, command等动词后的宾语从句中，表间接的命令和建议。其谓语形式是"(should)+动词原形"。如：
    I suggest that we (should) go swimming.
    (3) 在表语从句中，表示间接的命令，要求、请求、建议、决定等，主句中的主语通常是suggestion, proposal, request, orders, idea等。从句谓语形式是"(should)+动词原形"。如：
    His suggestion is that we (should) leave at once.
    (4) 在同位语从句中，谓语形式是"(should)+动词原形"。如：
    We received order that the work be done at once.
    (5) 在It is time that…句型中，其谓语动词形式是"动词的过去式"或
    "should +动词原形",should不可省。如：It's time (that) we went ( should go) to school.
    II. 例题
    例1 We had hoped that he ____ longer.
    A stays B have stayed C stayed D would stay
    解析：该题正确答案为D。had hoped表示“本希望”，同样用法的动词还有think, expect等，后面的句子需用虚拟语气
    例2 "Mary wants to see you today".
    "I would rather she ____ tomorrow than today."
    A comes B came C should come D will come
    解析：该题正确答案为B。would rather后面的从句需用虚拟语气，用动词过去时表示。
    例3 Had she been older, she ____ it better.
    A had done B might have done C might do D would do
    解析：Had she been older = If she had been old. 故该题正确答案为B。
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