Question

The relative pronoun that is used with an essential clause, and the relative pronoun which is used with a nonessential clause. In 3–5 sentences, explain when to use each pronoun and the difference between the two types of relative clauses. (2 points)

Answer 1

Use "that" with essential (restrictive) relative clauses — clauses that define or restrict which specific person or thing you mean and are not set off by commas. Use "which" with nonessential (nonrestrictive) relative clauses — clauses that add extra information about something already identified and are enclosed in commas. The difference: removing a restrictive clause changes which item is meant, while removing a nonrestrictive clause only removes additional detail. Examples: "Books that have torn pages are discounted." (restrictive) versus "My book, which has torn pages, belonged to my sister." (nonrestrictive).