You are welcome to answer questions posted in the Ask a Teacher forum as long as your suggestions, help, and advice reflect a good understanding of the English language. If you are not a teacher, you will need to state that clearly at the top of your post. Please note, all posts are moderated by our in-house language experts, so make sure your suggestions, help, and advice house the kind of information an international language teacher would offer. If not, and your posts do not contribute to the topic in a positive way, they will be subject to deletion.
It can be both. Normally, it is plural and refers to a group of individuals, but it can be singular when it refers to a nation or other grouping:
There are some people here to see you. (plural)
The Hmong are a people who live in the mountain of Laos. (singular- the Hmong are a tribe and we are thinking of them in this capacity, not as individual people)
how to use people 
Linear Mode
