What Is a Relative Pronoun? Examples & Exercises
https://www.gingersoftware.com/content/grammar-rules/relative-pronounsThere are only a few relative pronouns in the English language. The most common are which, that, whose, whoever, whomever, who, and whom. In some situations, the words what, when, and where can also function as relative pronouns. Because there are only a few of them, there are also just a few rules for using relative pronouns.