Edison is a great inventor or Edison was a great inventor

问题描述:

Edison is a great inventor or Edison was a great inventor

is
真理需要用一般现在时

用was
谓语的时态应该根据主语来定
爱迪生已经去世了
关于他的事情都应该要用过去时

因为Edison是伟大的发明家是个不变得事实,所以用一般现在时态(is).真理和事实都用一般现在时态

都可以,但用前者更合适,因为这是一个真理

The lattern is right.
Edison was a person who didn't alive now.

Both are right ,the former is telling a fact, while the latter is telling the fact happened now at the moment but before.

was!!