people要加s吗?

people要加s吗? three people 要不要加s?为什么? some people用加s吗? People可以加S变为peoples吗? so many people的“people”要不要加“s”? two hundred old people 的people要不要加s 8 people 加s吗There are 8 people in the picture. 这个句子有错吗?人（people)加不加“s” ? 许多人 用英文怎么说?是用MANY 还是 MUCH?PEOPLE要加s吗? people (人们）表示民族是加s吗? people在表示民族时,可以加s吗? Our Party represents the interests of the people.represents为什么要加s?第二人称不是不用加吗? dog is people good friend!这样说正确吗?还是dog前面加the.people加’s 人民公园前加the peoples park Chinese people前面要加the吗? American people 前面要加The吗? many people send (postcard)to each other on New Year's Day明信片加s吗? 怎么回答What's the population of...It's...后面要不要加people?比如It's 2 million.还是It's 2 million people? There's room for another three people in the back of the bus.这句话为什么要加ANOTHER呢 不加不是一样吗