Punctuation Rules
Why punctuation matters
Punctuation marks tell the reader when to pause, stop, or notice something. Correct punctuation makes writing clear — and 11+ papers often test it directly.
The full stop, capital letters and sentences
- Every sentence starts with a capital letter and ends with a full stop (.), question mark (?) or exclamation mark (!).
- A question mark ends a question: Where are you going?
- An exclamation mark shows strong feeling: What a goal!
Commas
Commas create small pauses. Use them to:
- Separate items in a list: We bought apples, pears, bananas and grapes. (No comma before the final "and" in a simple list.)
- After a connective or opener: Suddenly, the door opened.
- Around extra information: My brother, who is ten, loves football.
Apostrophes
Apostrophes have two jobs:
1. Contraction (missing letters): do not → don't, it is → it's.
2. Possession (belonging):
- Singular: add 's — the dog's bone.
- Plural ending in s: add just ' — the girls' team.
Careful: its (belonging) has no apostrophe; it's always means "it is".
Speech marks (inverted commas)
Put " " around the exact words someone says, with punctuation inside:
"Come here," said Mum.
Start a new line each time a new person speaks.
Colons and semicolons
- Colon (:) introduces a list or explanation: Bring these: a pen, a ruler and paper.
- Semicolon (;) joins two closely linked sentences: It was late; everyone was tired.
Worked example
Punctuate: the cat said tom is hungry
- "The cat," said Tom, "is hungry." — capital letters, speech marks around Tom's words, commas separating the speech. ✓
Common mistakes
- Confusing its (belonging) and it's (it is).
- Putting an apostrophe in ordinary plurals (apple's for more than one apple — wrong).
- Forgetting the capital letter after a full stop.
Top tips
- Read your sentence aloud — a natural pause often needs a comma.
- Check every apostrophe: is it a missing letter or possession?
- Put speech punctuation inside the speech marks.
Quick recap
- Sentences: capital letter to start, full stop / ? / ! to end.
- Commas separate and pause; apostrophes show contraction or possession (its = belonging, it's = it is).
- Speech marks surround spoken words (new speaker, new line); colons introduce, semicolons join.