Pronouns are one the most important parts of grammar writing. Almost all sentence has it in their structure. There are a lot of rules and variants of using pronounce that is why if you want to develop your writing up to maestro level you must know very well about them. Check yourself: do you know what type of pronouns it is - anyone, each, everyone, everybody, everything, both, few, many and others? Well, this pronouns are called indefinite pronoun
and using when we are talking about people, places, objects, or things without pointing to one specifically. Read other definitions on our website.