虚拟语气中,不管主语的人称和单复数,都用were ,否定的话,用weren't .I know if I wasn't so nervous,I'd be able to speak more clearly.这句话对吗？I know if I weren't so nervous,I'd be able to speak more clearly.哦，那就是练习册上的参考答案错了，谢谢~~if 的虚拟语气，往往要看具体的句子，是和哪个事实相反的，是对过去的虚拟，还是对现在的虚拟。