虚拟语气

历年真题中涉及到虚拟语气的考点可以归纳如下：

(1)(should) 动词原形的情形;

(2)if或but for等引导的条件句;

(3)wish, if only, would rather, It is(high)time that…的用法。

【真题】You would not have failed if__________(按照我的指令去做).(2009.12)

【答案】you had followed my instructions 或者you had followed my orders

【解析】本题较为容易，按照汉语意思直译。考点有两个：首先最重要的考点是if从句的虚拟语气考查;根据语法规定，如果主句中出现would have的形式，从句中应该采用had 过去分词的结构;第二是固定搭配“按照…的指令”表达为follow my instructions 或者是follow my orders 注意多样化的表达，两者选其一就可以;注意很多学生出现遗漏主语you，造成不必要的失分。

【真题】The victim __________(本来会有机会活下来)if he had been taken to hospital in time.(2006.12)

【解析】本句考查对错综时间条件句的虚拟语气的掌握。在与过去事实相反的条件下，if引导的条件句时态是过去完成时态，主句谓语一般使用would have done。

【答案】would have had a chance to survive/would have had a chance of survival