Comma (,) – Used to indicate a short pause
Rule 1 – Separating Words
- Use a comma to separate items in a list.
Example:
I bought mangoes, bananas, and apples.
Rule 2 – Oxford Comma
- Use a comma before ‘and’ in a list.
Example:
We sell books, videos, and magazines.
Note: Do not use a comma if “and” joins two items or phrases that are not complete sentences.
Examples:
- I bought apples and bananas.
- He bought a pen and a notebook.
Rule 3 – Introductory Words
- Use a comma after introductory words such as “Yes,” “No,” “Well,” “Hello,” when they appear at the beginning of a sentence.
Examples:
- Yes, I have completed it.
- Well, I think it’s a good idea.
Rule 4 – Pronouns
- Use a comma to separate pronouns in a list.
Example:
You, he, and I help the needy.
Rule 5 – Salutations
- Use a comma in greetings.
Example:
Good morning, Mrs. Jones.
Rule 6– Dates
- Separate day and year with a comma.
Example:
Pakistan came into being on 14 August, 1947.
Rule 7 – City & Country
- Separate city from state or country.
Example:
Ahmad lives in Islamabad, Pakistan.
Rule 8 – Direct Speech
Use a comma to separate the reporting verb (like said, asked, replied) from the quoted speech.
- Reporting verb first → comma before quotation
Example:
The teacher said, “Hard work is the key to success.”
- Quoted speech first → comma before reporting verb
Example:
“Hard work is the key to success,” the teacher said.
Rule 9 – Comma with Phrases
a. Introductory Phrases (at the beginning)
- After dinner, she went for a walk.
- On the whole, the show was good.
b. Participle Phrases (describing the subject)
- Walking along the river, she found a stone.
- Exhausted from the long journey, they went straight to bed.
c. Phrases at the End (extra information)
- He stood motionless, shocked by the news.
- The boys entered the stadium, shouting excitedly.
Rule 10 – Introductory Adverbs
Use a comma after adverbs at the beginning.
Examples:
- However, the results were not as expected.
- Firstly, let me introduce the topic.
- Later, we will discuss this topic.
- Sometimes, I watch movies in the evening.
- Fortunately, we caught the train on time.
Rule 11 – Mid-Sentence Adverbs
Use commas around adverbs in the middle of a sentence.
Examples:
- He, however, didn’t help me.
- He, therefore, went to the city.
Rule 12 – Comma before End Adverbs
- For adverbs at the end, place a comma before them for emphasis.
Example:
He didn’t come, however.
Rule 13– Conjunctive Adverbs
- Use a comma after conjunctive adverbs ( therefore, however, moreover, nonetheless, then, otherwise) connecting independent clauses.
Examples:
- Harry did not work hard; therefore, he failed.
- She felt exhausted; however, she kept working.
- I like tea; moreover, I drink it daily.
- It was raining; nevertheless, they went out.
Rule 14 – Before Coordinating Conjunctions
- Use a comma before for, and, nor, but, or, yet, so when joining independent clauses.
Examples:
- I phoned him, but he did not answer.
- He studied hard, and he passed the exam.
Rule 15– After Dependent Clauses
- “When a sentence starts with a dependent conjunction(if, when, after, while, before, as soon as, since, although), use a comma after the dependent clause.
Examples:
- If you run fast, you will catch the train.
- Although he is poor, he is honest.
Note: A dependent clause at the end usually does not take a comma.
Examples:
- I’ll give you a call when I get home.
- I don’t know where he lives.
Rule 16– Before Although
Use a comma before although, though, or even though when the clauses show contrast between two ideas.
Example:
He is kind, although he is strict.
Rule 17– Correlative Conjunctions
- Use a comma before but if a full clause follows.
Example:
Not only is he a teacher, but he is also a philosopher.
- No comma if no clause follows.
Example:
Not only is he a teacher but also a philosopher.
Note: Use a comma before ‘but’ only when it connects two complete sentences.
Rule 18 – Between Adjectives of the Same Type
- Use a comma to separate adjectives of the same class.
Example:
The watch is simple, plain.
Note: Do not use commas for adjectives of different kinds.
Example:
He was lying on a white marble table.
Rule 19 – Direct Address
- Use commas when directly addressing someone (name or person spoken to).
Examples:
- “John, please help me,” she said.
- “Please help me, John,” she said.
Note: The name “John” is being spoken to, so we separate it with a comma.
Rule 20 – Tag Questions
- Separate tag questions with a comma.
Example:
You don’t tell a lie, do you?
Rule 21 – Interruptions
Use commas to show interruptions or extra information in a sentence.
Example
- I, along with my sister, visited the zoo last Sunday.
- (“along with my sister” is extra information/interrupting phrase.)
Rule 22 – Essential vs Non-Essential Information
Use commas for extra (non-essential) information, but not for essential information.
- With comma (non-essential):
Example:
He likes many fruits, such as mangoes and bananas.
- Without comma (essential):
Example:
Students such as Ali and Sara performed well.
Rule 23– Appositive Phrases
Use commas to enclose extra information that renames a noun.
Example:
• Maxwell, the captain of the team, played cricket well.
Rule 24 – Relative Clauses
Use commas with non-essential relative clauses.
With comma (extra info):
• Joseph, who is a scientist, lives in London.
Without comma (essential):
• The student who studies hard gets good grades.
Note: If the information is necessary to identify the noun → no comma
Example:
• The writer William Shakespeare wrote many famous plays.
Rule 25 – Comparative Adjectives
- Use a comma to separate paired comparative adjectives.
Example: The higher you go, the cooler it is.
Rule 25 – Comma before Which
Use a comma before “which” when it refers to the whole idea of the preceding sentence, not just a single noun.
Example:
- Max said he was ill, which is a lie.
(“which is a lie” refers to the entire statement “Max said he was ill,” not just “ill.”
Rule 26 – Comma before Who
Use comma before 'who' when the information is extra.
Example:
This is Mr James, who invited the students.
Note: Do not use a comma before “who” when information is necessary.
Example:
The student who studies hard succeeds.