research是可数名词吗?

是可数名词
比如 do some researches 做一些研究

do some research

'research ' is abstract noun. It is therefore uncountable.

不可数名词

research
n.
调查, 探讨; 仔细搜索(for, after)
[常用复]学术[创造性]研究; 探索
basic research
理论[科学, 基本]研究
be engaged in research
从事研究
make scientific researches on
进行...的科学研究