摘要： 当if引导的从句用虚拟语气时.可以把if省去.把从句中的were.had.should等放在从句前面.构成部分倒装. [考例]① fired, your health care and other benefits will not be immediately cut off. A. Would you be B. Should you be C. Could you be D. Might you be [解析]B.根据句意可知.前面应该是一个与将来事实相反的虚拟条件句.构成是should +v.或were to + v..省略if后要使用部分倒装语序.只有B项符合符合要求. ②What would have happened , as far as the river bank? A. Bob had walked farther B. if Bob should walk farther C. had bob walked farther D. if Bob walked farther [解析]C.根据句意可知.这是一个与过去事实相反的虚拟语气的复合句.期构成是:条件状语从句中谓语动词用过去完成时.主句中用would / could /should-+完成时.省略if后使用部分倒装语序.只有C项符合.

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