wear a uniform为什么不用an

wear a uniform为什么不用an wear a uniform 还是wear uniform 是wear a uniform还是wear the uniform dress a uniform 还是wear a uniform dess与wear的区别是什么? 1.do you have to wear uniform today?2.do you have to wear a uniform at school?为什么第一句没a, Does he have to wear a uniform at school.翻译 We have to wear a uniform.（改为否定句） Do you have to wear a uniform at school? Mary,you don't have to wear a uniform. I'd like ____(wear) a uniform at school. I wear a white uniform.的同义句是什么? we have to wear a uniform to school意思?we have to wear a uniform at school.区别? your wear a uniform in your job 反意疑问your wear a uniform in your job , _____ _____? Jack likes to wear ablack uniform.=Jack likes to ___ ___ a black uniform. His brother always wears---uniform to school.A.a B.anC./D.the 正确答案是C uniform可数吗?什么情况下 uniform前面加冠词?“穿制服”是wear uniform 还是wear a uniform?为什么这道题不能加冠词呢? Do you know the man____ a blue uniform ____the second photo A.wear,in B.wearing ,in为什么? you have to wear a uniform at school同义句是 You have to wear a uniform at school.____ a uniform at school,_____. 1.do you have to wear uniform today?2.do you have to wear a uniform at school?为什么第一句没a,第二句有a 到底加不加a啊?