have communication with sb加不加a

因为communication是不可数名词啊。

communicationn.表达；交流；交际；传递；通信；交通联系

Television is the modern medium of communication.

电视是现代传媒。

The methods of communication used during the war were primitive by today\'s standards.

按今天的标准，大战时期使用的通讯方法非常简陋。

The newsletter is a useful channel of communication between teacher and students.

发简讯是沟通师生的有益渠道。