Use who, which, that, and where correctly in defining and non-defining relative clauses. Each guide covers the rules, punctuation, and when you can omit the relative pronoun.
Learn how to use who, which, that, whose, where, and when to give essential information about a noun — and discover when you can drop the relative pronoun altogether.
Learn how to add extra, non-essential information about a noun using who, which, whose, and when — always with commas, never with that.
Choose the right pronoun to connect a relative clause to the noun it describes. After this guide you will know exactly when to use who, which, that, whose, and where — and when you can leave the pronoun out entirely.
Sometimes you can drop who, which, or that from a relative clause — and sometimes you absolutely cannot. After this guide you will know the difference instantly and use contact clauses naturally in both speech and writing.