第四章 虚拟语气 （一) 状语从句中的虚拟语气虚拟语气在 if 引导的条件句中的用法三点：从句（条件)主句(目的）表示于现在事实相反的虚拟条件句If+ 主 语 + 动 词 的 过 去 式 （ be 用were）If I had time, I would attend the meeting.主语+would（should could might）+动词原型表示与过去事实相反的拟条件句If+主语+had+动词的过去分词If he had hurried ， he could have caught the train。主语+would(should could might）+have+动词的过去分词表示与将来事实相反的虚拟条件句1、If+主语+动词过去式2、If+主语+were to+ 动词原形3、If+主语+should +动词原形If I were to go abroad， I would go to America。主语+would（could should might）+动词原型错综时间条件句-—主从句时间不一致的情况下的虚拟语气有时条件从句中的动作与主句中的动作，发生的时间不一致，这是动作的形式应根据它所表示的时间加以调整。If you had followed my advice， you would be better now。If you had studied hard before， you would be a college student now。含蓄条件句有 时 虚 拟 条 件 句 并 没 用 if 从 句 表 示 出 来 ， 而 是 用 介 词 短 语（otherwise,or，without,but for）上下文或其他方式来表示。She would have died without my help。。条件从句中省略 if采纳倒装语序的情况在 if 引导的表示虚拟的条件状语从句中,有时可以把虚拟条件中的连词 if 省 去，而将 had，should，were 等助动词提到主语之前。例：原句：1： If she were younger， she,would do it.去 if：Were she younger, she would do it.2: If you had come earlier， you would have met him.去 if： Had you come earlier， you would have met him3：If it should rain tomorrow, we would not go climbing。去 if：Should it rain tomorrow, we would not go climbing。虚拟语气在 as if/as though 引 导 的 方 式状语从句中1.表示与现在事实相反或对现在情况有怀疑，谓语动词用过去式.He treats the boy as if he were his own son.2.表示与过去事实相反，谓语动词用过去完成时。He spoke as if he had known about it。3．表示与将来事实相反，（表示将来...
