Using 'One' and 'Ones' in English

Dialogue

Anna: I need a new pen. This one is broken.
Ben: Do you want a black one or a blue one?
Anna: A blue one, please. Oh, and I need some new socks. The old ones have holes!
Ben: Look at these. Do you like the red ones or the white ones?
Anna: The white ones are nice! I’ll take them.

The girl is holding a blue pen. This one is broken.

Explanation

We use 'one' and 'ones' to avoid repeating nouns.

• 'One' replaces a singular noun.

• 'Ones' replaces a plural noun.

Examples:

• I don’t like this hat. I want a different one. (= a different hat)

• These shoes are old. I need new ones. (= new shoes)

More Rules

1. We can use 'one' and 'ones' after adjectives.

   • This cake is delicious! I want another one.

   • These apples are bad. Let’s buy fresh ones.

2. We use 'one' and 'ones' with determiners (this, that, these, those).

   • I don’t like this bag. I prefer that one.

   • These chairs are uncomfortable. I like those ones.

3. We do not use 'one' or 'ones' with uncountable nouns.

   • ❌ I don’t like this milk. I want a different one. (incorrect)

   • ✅ I don’t like this milk. I want a different kind. (correct)

Practice

Complete the sentences with 'one' or 'ones'.

1. This apple is too small. I want a bigger _______.

2. These glasses are broken. I need new _______.

3. I like this dress, but that _______ is prettier.

4. These oranges are too sour. Do you have sweeter _______?

5. This chair is old. I need a new _______.

Answers: 1. one 2. ones 3. one 4. ones 5. one

Quick Tip

• If you are replacing a singular noun → use 'one'.

• If you are replacing a plural noun → use 'ones'.

• Do not use 'one' with uncountable nouns.

Now, try using 'one' and 'ones' in your own sentences! Happy learning! 😊