those deer are eating grass.

问题描述:

those deer are eating grass.

yes

没错。deer是个集合名词,是复数含义,和people一样

这句话是正确的.
deer,鹿,是单复数同形,a deer,two deer
类似的词还有:fish鱼,sheep绵羊,works(工厂),means手段,Swiss瑞士人,Chinese中国人

没错!