Apostrophe Rules in English: Possession and Contractions

An apostrophe (’) is a small punctuation mark with two main jobs: it shows missing letters in contractions and indicates possession. Although the mark is simple, its position can completely change the meaning of a phrase.

Learning the main apostrophe rules will help you avoid common errors such as apple’s, its’, and the childrens’ room.

Apostrophes in Contractions

A contraction joins two words and leaves out one or more letters. The apostrophe appears where the missing letters were removed.

Examples:

• I don’t understand the question.
• We’re meeting after class.
• Maria hasn’t finished her homework.
• Let’s practise these sentences again.
• You shouldn’t touch that wire.

Some contractions can represent more than one full form:

The surrounding words usually make the meaning clear.

Contractions and Formal Writing

Contractions are natural in:

• everyday conversation
• informal emails
• personal messages
• dialogue
• friendly articles

Full forms may be more suitable in:

• formal reports
• academic assignments
• official notices
• legal documents

Compare:

• Informal: We can’t approve the request today.
• Formal: We cannot approve the request today.

Singular Possessive Nouns

A possessive noun shows that something belongs to or is connected with someone or something.

Add ’s to a singular noun:

Sentence examples:

• The girl’s coat is hanging by the door.
• We visited the doctor’s office.
• The book’s cover was damaged.
• My brother’s phone is missing.
• The school’s entrance closes at six.

The possessed object does not always need to appear:

• This bag is Amina’s.
• We are having dinner at Ahmed’s.
• That seat is my sister’s.

Possession Is Not Always Ownership

An apostrophe can show several kinds of relationships:

• the manager’s decision — a decision made by the manager
• today’s lesson — the lesson for today
• Pakistan’s population — the population of Pakistan
• the car’s engine — the engine that is part of the car
• two weeks’ notice — a notice period lasting two weeks

Plural Possessive Nouns

The apostrophe position depends on how the plural noun is formed.

Regular Plurals Ending in “S”

Add only an apostrophe after the final s:

Examples:

• The students’ results were announced today.
• Both players’ bags were in the changing room.
• The workers’ uniforms need replacing.
• We listened to the teachers’ suggestions.

Irregular Plurals Not Ending in “S”

Add ’s:

Examples:

• The children’s playground is being repaired.
• We discussed people’s concerns.
• The shop sells women’s jackets.
• The men’s changing room is downstairs.

Singular and Plural Possession Compared

The apostrophe’s position tells the reader whether the owner is singular or plural.

Names Ending in “S”

Most modern writing styles add ’s to a singular name ending in s:

• James’s laptop
• Chris’s bicycle
• Carlos’s passport
• Iris’s garden
• Thomas’s opinion

Examples:

• James’s presentation begins at ten.
• I borrowed Chris’s charger.
• We visited Thomas’s house yesterday.

Some style guides permit only an apostrophe after certain names:

• James’ laptop
• Charles’ speech
• Jesus’ teachings

Both patterns appear in published English. For general writing, James’s is widely accepted and often easier for learners to apply consistently.

For plural family names ending in s, place the apostrophe after the plural form:

• the Williamses’ house
• the Joneses’ car
• the Harrises’ garden

Compare:

Joint and Separate Possession

When two people share one item, add ’s only to the final name.

Joint Possession

• Ayesha and Hamza’s house
• Bilal and Ahmed’s business
• Sara and Ali’s wedding
• Jack and Emma’s project

Examples:

• We visited Ayesha and Hamza’s house.
• Sara and Ali’s wedding is in October.
• I reviewed Jack and Emma’s project.

The house, wedding, or project belongs to both people together.

Separate Possession

When each person owns a separate item, make both names possessive:

• Ayesha’s and Hamza’s cars
• Bilal’s and Ahmed’s businesses
• Sara’s and Ali’s offices
• Jack’s and Emma’s projects

Compare:

Apostrophes with Letters and Numbers

Apostrophes are sometimes used with letters for clarity, but they are not normally used to form plurals of numbers, abbreviations, or decades.

Lowercase Letters

Use apostrophes when plural lowercase letters might be difficult to read:

• Dot your i’s and cross your t’s.
• Mind your p’s and q’s.
• The word contains three e’s.

Without apostrophes, forms such as is and as could look like ordinary words.

Capital Letters

Capital letters usually take a simple s:

• She received three As.
• The sign contains two Rs.
• Remember to write your IDs clearly.

Some styles use apostrophes for extra clarity, but plain plurals are now common.

Numbers and Decades

Do not use an apostrophe to make a number plural:

Use an apostrophe when numbers are omitted:

• the ’90s = the 1990s
• the class of ’26 = the class of 2026

Use a possessive apostrophe when the number expression shows possession:

• the 1990s’ fashion trends
• the team of 2026’s achievement

The first example refers to trends belonging to the entire decade.

Common Apostrophe Errors

It’s and Its

These two forms are often confused:

• it’s = it is or it has
• its = possessive form of it

Examples:

• It’s getting dark.
  It is getting dark.
• It’s been a busy week.
  It has been a busy week.
• The bird spread its wings.
• The company changed its policy.

A quick test is to replace the word with it is or it has. If the sentence still makes sense, use it’s.

Who’s and Whose

• who’s = who is or who has
• whose = belonging to whom

Examples:

• Who’s waiting outside?
• Who’s taken my pen?
• Whose umbrella is this?
• Do you know whose car was damaged?

Your and You’re

• your = belonging to you
• you’re = you are

Examples:

• Is this your notebook?
• You’re improving quickly.

Plurals of Family Names

Do not use an apostrophe simply to refer to a whole family:

• Correct: The Khans are visiting us.
• Incorrect: The Khan’s are visiting us.
• Correct: We invited the Joneses.
• Incorrect: We invited the Jones’s.

Use an apostrophe only when showing possession:

• the Khans’ house
• the Joneses’ garden

Practice Exercise

Add apostrophes where necessary. Some sentences do not need one.

1. The cats tail is very long.
2. The girls uniforms are ready.
3. The childrens books are on the shelf.
4. James notebook is on the table.
5. Sara and Alis office is upstairs.
6. Saras and Alis desks are beside each other.
7. Weve completed the first lesson.
8. Its raining outside.
9. The company changed its logo.
10. Music from the 1990s remains popular.
11. Mind your ps and qs.
12. Whos jacket is hanging by the door?
13. The two teachers classroom is being painted.
14. The Smiths live across the road.
15. The Smiths garden is full of roses.

Answers

1. The cat’s tail is very long.
2. The girls’ uniforms are ready.
3. The children’s books are on the shelf.
4. James’s notebook is on the table.
5. Sara and Ali’s office is upstairs.
6. Sara’s and Ali’s desks are beside each other.
7. We’ve completed the first lesson.
8. It’s raining outside.
9. The company changed its logo.
10. Music from the 1990s remains popular.
11. Mind your p’s and q’s.
12. Whose jacket is hanging by the door?
13. The two teachers’ classroom is being painted.
14. The Smiths live across the road.
15. The Smiths’ garden is full of roses.

Short Summary

1. Use an apostrophe to show missing letters: cannot → can’t.
2. Add ’s to a singular possessive noun: the student’s bag.
3. Add only ’ to a regular plural ending in s: the students’ bags.
4. Add ’s to an irregular plural: the children’s bags.
5. Use ’s with most singular names ending in s: James’s phone.
6. Do not add apostrophes to ordinary plurals, numbers, or decades.
7. Remember that it’s means it is or it has, while its shows possession.

Apostrophe in English PDF

Frequently Asked Questions