イギリス英語とアメリカ英語の句読点の違い｜名前と使い方の完全ガイド

What’s this? .
A full stop or a period?

What are these? ( )
Brackets or parentheses?

If you read English from different countries, you may see different names for the same punctuation marks. The rules for using them can also be different.

This can feel confusing.

Today, we will look at the key differences between British and American punctuation. We will cover the names, the rules for quotation marks, and one very useful comma habit.

1. Same Mark, Different Name

British and American English often use different names for the same symbol. Here are the most common ones.

. Full Stop (UK) vs. Period (US)

This is the dot at the end of a sentence.

- UK: Full stop

- US: Period

- "Please read the sentence and stop at the full stop."

- "Please read the sentence and stop at the period."

Think: Both mean the same thing. If you are in the UK, use full stop. In the US, use period.

! Exclamation Mark (UK) vs. Exclamation Point (US)

This is the mark that shows excitement or strong feeling.

- UK: Exclamation mark

- US: Exclamation point

- "You passed! - I used exclamation mark to show my happiness."

- "You passed! - I used exclamation point to show my happiness."

Think: Again, same meaning. Choose based on your audience.

( ) Brackets (UK) vs. Parentheses (US)

These are the curved marks used for extra information.

- UK: Brackets (or round brackets)

- US: Parentheses

- "Put the date in brackets after the name."

- "Put the date in parentheses after the name."

Important: This causes confusion with the next one.

[ ] Square Brackets (UK) vs. Brackets (US)

These are the straight, square marks.

- UK: Square brackets

- US: Brackets

- "The editor added a note in square brackets."

- "The editor added a note in brackets."

Why this matters: If an American says "brackets," they mean`[ ]`. If a British person says "brackets," they usually mean`( )`. Always check which shape they mean.

2. Inverted Commas vs. Quotation Marks

These are the marks around speech or quotedwords. The name is different, but so are the rules.

The Name

- UK: Inverted commas or speech marks

- US: Quotation marks

Single '...' vs. Double "..."

The priority is different.

- UK style: Use single first, then double inside.

- She said, 'He called me "brave" yesterday'.

- US style: Use double first, then single inside.

- She said, "He called me 'brave' yesterday."

Think: UK starts with one line. US starts with two lines.

Full Stop and Comma Placement

This is a big difference. It changes where you put the small marks.

- UK style: Put the full stop or comma outside the quotation mark - unless it was part of the original text.

- He said, 'Wait for me'.

- The sign said 'No Entry', so we left.

- US style: Put the full stop or comma inside the quotation mark, always.

- He said, "Wait for me."

- The sign said "No Entry," so we left.

Why this matters: If you mix the styles, your writing can look messy. Choose one style (British or American) and stay with it.

3. The Oxford Comma (Serial Comma)

This is the comma before "and" or "or" in a list of three or more things.

- Without Oxford comma: "I bought apples, bananas and pears."

- With Oxford comma: "I bought apples, bananas, and pears."

Some books and schools teach the Oxford comma, and some don’t.

My advice: Always use the Oxford comma. It makes your meaning clearer.

Look at this famous example:

- "I love my parents, Lady Gaga and Snoopy."

In this example, the person is writing about three things they love, but it looks like their parents ARE Lady Gaga and Snoopy!

- "I love my parents, Lady Gaga , and Snoopy."

(Clear. These are three separate things.)

Think: The Oxford comma is a small mark that prevents big misunderstandings. It is a good habit to use it.

Why This Matters

Knowing these differences helps you in two ways.

1. Reading: You will understand texts from both countries without confusion.

2. Writing: You can choose one style and use it correctly. This makes your English look professional and clear.

If you write for work or study, being consistent (always the same) is more important than which style you pick.

Quick Practice

Choose the correct answer for British English.

1. The dot at the end of a sentence is called a _____.

a) period

b) full stop

2. In British English, the mark`!` is called an _____.

a) exclamation mark

b) exclamation point

3. In British English,`()` are called _____.

a) parentheses

b) brackets

4. Choose the correct British style:

a) She said, 'I'll be there' .

b) She said, 'I'll be there.'

5. Choose the clearest list:

a) I invited Tom, Sarah and Jim.

b) I invited Tom, Sarah, and Jim.

Final Thought

British and American punctuation is not about right or wrong. It is about style and consistency.

Remember these three key points:

- Names are different. Full stop vs. period. Brackets vs. parentheses.

- Quotation marks are different. Single first (UK) vs. double first (US). Full stops outside (UK) vs. inside (US).

- The Oxford comma is your friend. Always use it for clarity.

Pick one style, learn its rules, and use it with confidence.

Answers:
1) b
2) a
3) b
4) a
5) b (clearer with the Oxford comma)