• The student who sits next to me is from Spain. (identifies which student)
• The book that I borrowed is on the table. (identifies which book)
• People who exercise regularly are healthier. (defines the group)
📌 Non-Defining Relative Clauses
• My mother, who is 65 years old, still works. (extra info about my only mother)
• Paris, which is the capital of France, is beautiful.
• My car, which I bought in 2010, needs repairs.
⚠️ Key Differences to Remember:
• Defining clauses answer "Which one?"
• Non-defining clauses give extra, "by the way" information.
• Commas are essential for non-defining clauses.
💡 Quick Test:
If you can remove the clause and the sentence still makes sense, it's non-defining (use commas). If the sentence becomes unclear, it's defining (no commas).