1、虚拟语气常常会出现在条件句中，并且在条件句中，虚拟语气常常会有特殊的用法或者变化，我们一起看一下吧。
2、第一种，虚拟语气在条件句中的运用。这里，我们首先讲述第一种情况：真实条件句所谓真实条件句，就是实现的可能性比较大如：If we leave now, we can still catch the bus
3、第二种情况，在虚拟条件句中。所谓虚拟条件句，就是不可能实现。这里又将出现两种情况。第一类，与现在事实相反的情况。这中情况下，从句要用过去式，be要用were，主句则需要使用should\would等词+动词原形。
4、上述情况下我们举几个例子：IF I were you, I would forgive him.If I knew her telephone number, I would tell you.
5、第二类是与将来事实相反这个时候，条件句需要使用过去式、should do、were to 蟠校盯昂do; sholud/ would do例如：If he shuold come here tomorrow, I should/ would talk to him about this matter.
6、第三类，与过去事实相反，这个时候，条件句用：had +过去分词；should/would/罕铞泱殳could/m足毂忍珩ight have done例句：If he had taken my advice, he would not have made such a mistake.
