下面小编跟大家一起了解英语四六级必备虚拟语气分享，希望对大家的学习有所帮助。
虚拟语气主要有三种结构：
1)表示与现在情况相反：
主句谓语用“would / could / might 动词原形”，从句谓语用“动词的一般过去时”(动词be的过去式一律用were)。
①If I were you, I would not accept his offer.
②If I had time, I would certainly go to the cinema with you.
2) 表示与过去情况相反：
主句谓语用“would / could / might have 过去分词”，从句谓语用过去完成时。
①If I had got up a little earlier, I wouldn’t have missed the train.
②If I had been more careful, I might have passed that exam.
3) 表示与将来情况相反：
主句谓语用“would / could / might 动词原形”，从句谓语用“were 动词不定式”或“should 动词原形”。
①If I were to do the job, I would not be able to have enough time to study.
②If it should rain tomorrow, I would not go out with you.
虚拟条件句连接词if的省略
如果虚拟条件句的从句中含有were,had,should, could等词时，可以省略连接词if，但这时必须把were, had, should, could等词移到主语前面，形成倒装。这种句型主要用于书面形式。

①Were I to do the job, I would finish doing it within two weeks.
②Had it not been for his help, we couldn’t have arrived there on time.
③Should it rain tomorrow, I would stay at home.
wish后宾语从句中的谓语构成
动词wish后的宾语从句表示未实现的或不可能实现的愿望，其宾语从句中的谓语动词要用虚拟语气，有以下三种构成形式。
1) 表示现在不可能实现的愿望，宾语从句中的谓语动词用一般过去时。(be的过去式为were)。
①I wish I had enough money to buy a car.
②I wish I were as young and energetic as you.
2) 表示过去未能实现的愿望，宾语从句中的谓语动词用过去完成时(had 过去分词)或“would/could have 过去分词 ”。
①I wish I hadn’t made such a mistake.
②I wish I could have done it better.
3) 表示将来不可能实现的愿望，宾语从句中的谓语动词用“would / should (could, might) 动词原形”。
①I wish I would not get old.
②I wish I could travel around the world one day.