The information in a defining relative clause is essential, so we can’t leave out the relative clause. The information in a non-defining relative clause is extra information which isn’t essential, so we can …

Clear explanations of English relative clauses, with lots of examples and exercises.

Defining clause; the meaning is that there are more sons in the family, e.g.: They have two sons who are doctors and one who is an architect. Compare: They have two sons, who are doctors. Non-defining …

Master defining and non-defining relative clauses and relative pronouns and adverbs in this complete B1 Intermediate grammar lesson.

Relative clauses give us information about the person or thing mentioned. Non-defining relative clauses give us extra information about someone or something. It isn't essential for understanding who or …

Nov 19, 2025 · A complete B1 guide to defining and non-defining relative clauses for ESL learners. Study the rules, learn the difference between who, which, and that, and practice with interactive …

Note that defining (restrictive) and non-defining (non-restrictive) clauses must be introduced by the appropriate relative pronoun (who, which, that, whose). Defining (restrictive) clauses should NEVER …