Comma Rules
When and how to use commas correctly in English
When to Use Comma Rules
- •Lists: I bought apples, oranges, and bananas.
- •Before coordinating conjunctions joining clauses: I was tired, so I went to bed.
- •After introductory elements: However, I disagree. After lunch, we left.
- •Around non-essential information: My brother, who lives in London, is visiting.
- •Between adjectives of equal rank: a tall, handsome man.
How to Form Comma Rules
Affirmative (+)
Place comma where pause or separation is needed
Negative (-)
Don't use comma between subject and verb, or before essential clauses
Question (?)
Same rules apply in questions
💡 Oxford comma (before 'and' in lists) is optional but recommended for clarity.
Examples of Comma Rules
✓I like coffee, tea, and juice.
✗I like coffee tea and juice.
Use commas to separate list items.
✓Although it was late, we continued.
✗Although it was late we continued.
Comma after introductory clause.
✓My sister, who is a doctor, helped me.
✗My sister who is a doctor helped me.
Commas around non-essential clause.
Common Mistakes with Comma Rules
💡 Practice Tips for Comma Rules
- • Lists: comma between items; Oxford comma before 'and' is optional.
- • Two independent clauses + conjunction = comma before conjunction.
- • Introductory words/phrases/clauses = comma after.
- • Non-essential info = commas around; essential info = no commas.
Quick Quiz
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