是可数名词，有复数形式，复数为dreams，例如：

1. Only in his dreams does he give expression to his fears.他只有在梦中表现出恐惧。

2.The study theorizes about the role of dreams in peoples' lives.这项研究从理论上说明了梦在人们生活中的作用。

3. I've finally found the man of my dreams.我终于找到了理想中的男人。