Relative pronouns are words that are used to introduce relative clauses in sentences.The most common relative pronouns are 'who', 'whom', 'whose', 'which' and 'that'.Relative pronouns are used to refer back to a noun in the main clause.The relative pronoun 'who' is used to refer to people.The relative pronoun 'which' is used to refer to things and animals.The relative pronoun 'that' can be used to refer to both people and things.The relative pronoun 'whom' is used as the object of a verb or preposition when referring to people.The relative pronoun 'whose' shows possession and is used to refer to people, animals, or things.Relative pronouns help to connect information in a sentence and make it easier to understand.In some cases, relative pronouns can be omitted if the sentence still makes sense without them.Relative pronouns can be used to add more detail or give additional information about a noun in a sentence.Using relative pronouns correctly can help to make your writing clearer and more concise.Relative pronouns can also be used in defining and non-defining relative clauses to give more information about a noun.Knowing how to use relative pronouns correctly can improve your overall English language skills.Practice using relative pronouns in different types of sentences to become more familiar with their usage.