i have a cold这里的 a 是什么作用.

i have a cold这里的 a 是什么作用. I have a cold Yes,i have a cold.的问句是 求回答 I have a cold and a fever的中文 cold和have a cold 的区别 I have a bad cold .的问句是什么?急 填空：I have a cold.I have a running____ I have a cold.I have a running_____ I have got a cold什么时态 I have a cold .改为 一般疑问句 I have got a bad cold today. i have a bad cold 回答 i have a cold中文是什么意思 I have a bad cold,either.改错 I have a cold根据答句写问句 I have a cold serious是什么意思 询问一下关于have a cold的用法I have a cold.意思是“我感冒了”如果我想强调我正在感冒中,用【I’m having a cold.】这样对吗? have a cold 与 catch a cold的区别