“The boy has an illness.”这句话中,为什么“illness”前加了一个冠词“an”?“illne

an illness还是the illness对? have an illness对不对?illness可数吗? have an illness 还是 have illness The patient,( )how serious his illness was,still refused an an American boy 为什么冠词用an? 为什么MP前加冠词an,mp3前加冠词a呢?他们有什么区别? 在某一方面有疾病,英文是用have an illness /sickness后加什么介词啊? 哪些专有名词前加a/an,哪些前加the,哪些前不用冠词? NBA 前加冠词a还是an even 前加冠词a 还是an The flu is an illness in which you get a cold or a fever. 这句话为什么没有加冠词an.Lucy is our office assistant.