Punctuation that changes meaning
Comma, colon, possessive — small marks, big marks.
← All countdown tipsIn the 11+, a comma, apostrophe or colon is not decoration. Move one mark and the meaning of the sentence changes. Read the sentence out loud both ways before you pick.
Picture it: the same words, two meanings
No comma
Let’s eat Grandma.
Sounds as if Grandma is on the menu.
Comma
Let’s eat, Grandma.
You are talking to Grandma — time for dinner.
The comma shows who is being spoken to. Without it, Grandma becomes the object of eat.
Remember — the marks that matter
Comma ,
Lists, extra info, or speaking to someone.
Apostrophe ’
Missing letters (it’s) or belonging (the girl’s bag).
Colon :
Introduces a list, reason, or example.
Exam trap
Mixing up its (belonging to it) and it’s (it is). If you can swap in “it is”, you need the apostrophe.
✗ The cat chased it’s tail.
“It is tail” does not make sense
✓ The cat chased its tail.
Belonging — no apostrophe
Question patterns you might see
Same test: does this mark change who, what, or how many?
1 · Simple — Speaking to someone
“Which sentence is correctly punctuated? Stop Sam. / Stop, Sam.”
- 1Read it as an order to halt Sam (no comma needed if Sam is the object).
- 2Read it as calling Sam’s name (comma before the name).
- 3Match the meaning the question wants — usually the vocative comma: Stop, Sam.
Stop, Sam. = you are talking to Sam
2 · Simple — Plural vs possessive
Plural
The dogs barked.
More than one dog.
Possessive
The dog’s bark was loud.
The bark belonging to one dog.
Several dogs: dogs. One dog owning something: dog’s. More than one dog owning something: dogs’ (apostrophe after the s).
dogs
many dogs
dog’s
one owner
dogs’
many owners
3 · Medium — Extra information between commas
“My brother, who lives in Kent, sat the 11+.”
The pair of commas wrap extra information. One comma only would be wrong.
4 · Medium — Colon before a list
“Bring three things: a pencil, a rubber and a ruler.” The colon sits after a complete clause, then the list.
Bring three things:pencilrubberruler5 · Trickier — Restrictive vs extra
No commas — which children?
The children who finished early read quietly.
Only those who finished early. The clause identifies them.
Commas — extra fact
The children, who finished early, read quietly.
All the children finished early. The clause is extra.
6 · Trickiest — It’s / its / they’re / their / there
- 1it’s = it is. their = belonging to them. they’re = they are. there = a place.
- 2Swap the long form in. If the sentence breaks, you have the wrong one.
- 3“The school lost it’s chance” fails the swap → use its.
they’re tired
they are tired ✓
their bags
bags belonging to them
wait there
a place
If “it is” / “they are” doesn’t fit, drop the apostrophe
Coach tip: read the sentence in your head as a tiny play. Who is speaking, who owns the thing, and what is extra information?
Tomorrow (D-12): speed, distance and time.
Next step
Practice link coming soon for this day — explore all practice topics.
WAGet this tip daily on WhatsApp →Practice locks the idea in. WhatsApp delivers tomorrow’s tip to your phone — same group as mock updates.