have an illness 还是 have illness

have an illness 还是 have illness have an illness对不对?illness可数吗? an illness还是the illness对? 在某一方面有疾病,英文是用have an illness /sickness后加什么介词啊? Some American doctors say taht 50% of illness have something His illness must have some connections with his unhealthy di I thought she might have a mental illness illness是可数还是不可数? illness是可数还是不可数 be ill还是be illness 是die of illness 还是die from illness? have a bad illness和have a bad cold有什么区别