He has a flu .哪里错了?

He has a flu .哪里错了? he has flu说成he has a flu行吗? He has a stomach ache 和 He has flu 为什么一个有A一个没有A He has flu.和He has a toothache.这两句话一个他得了流感,一个是他牙痛.为什么flu不要用a dave has a flu .so he must stay in bed .改错 问一下英语爱好者rarry has the flu.His nose is running.He coughs a lo 这个句子哪里错了:She has a cousin and he goes abroad to further his He has been never to a water park 哪里错了 She has flu.为何不用加a mr.wang has stay in_bed because he has _ flu. he has became a doctor,which he want to be.这句话错了吗?错哪里? He has two big eye.哪里错了