帮我解析一下下面的英语句子谢谢

题目

帮我解析一下下面的英语句子谢谢
误：If he was in better health,the would probably allow him to do the work.
正：If he were in better health,the would probably allow him to do the work.
正然的If he were为什么要用were?因为虚拟语气的固定用法吗?

答案

这句主语拼写错了吧?,they would probably allow him to.
就是虚拟语气,if 后面正常语序是if he was,但是因为是不可能发生的情况,就固定使用if he were.