PEOPLES' & PEOPLE' s区别

PEOPLES == N.pl ===没啥区别
There are many peoples all over the world.
讲到人用 plural noun,复数名词.美国人好不好,这是人==people
讲到种族是可数的,用单数或复数 （peoples 加 s).
*** What are your friends like?
你的朋友们都是怎样的人.(朋友,可数,复数)
*** They are very easy going people.
他们都是很好相处的人.(想描述他们是属於同一类型的人,要在这里著眼)