Use “Which” Confidently
Learn how to use which correctly in questions, relative clauses and everyday sentences.
Use “Which” for Extra Information
Add non-essential information with commas.
We use which after a comma when the information is additional. The main meaning remains complete without it.
My car, which is ten years old, still runs well.
London, which is the capital of England, attracts many tourists.
Her phone, which she bought last week, is already broken.
The exam was postponed, which surprised everyone.
My laptop, which is quite old, works perfectly.
My laptop which is quite old works perfectly.
Use “Which” with Confidence
Add extra information clearly and punctuate it correctly.
Use which to add extra, non-essential information about a noun or to comment on a complete idea.
Which
The added information can be removed without changing the main meaning. Place commas around it.
Quick Revision
Review extra information and the correct use of “which.”
| Use | Rule | Example |
|---|---|---|
| Extra information | Use “which” with commas. | My bag, which is new, is expensive. |
| Whole idea | Comment on the previous clause. | She passed the exam, which surprised us. |
Easy Formula
Common Mistakes
My car which is ten years old still works.
She passed the exam, which surprised us.
She passed the exam which surprised us.
My car, which is ten years old, still works.