Possessive ’s with time expressions: Two hours’ walk — Explanation

Practice B2 exercises on possessive ’s with time expressions such as "two hours’ walk" with clear explanations and examples to improve your grammar skills.

Possessive ’s with Time Expressions e.g. “Two hours’ walk” Exercises

At B2 level of English you will see that the possessive ’s is not only used to show ownership (e.g. John’s car), but also appears in time expressions. This is a very common structure in everyday English and will help you sound more natural and fluent.

What does that mean?

In expressions such as:

• two hours’ walk
• a day’s work
• three weeks’ holiday

The possessive ’s (or just ’) indicates a relationship between time and an activity, distance or quantity.

“Two hours’ walk” means:
A walk that takes two hours.

Structure

There are two main patterns:

Unique Time Expression

a/an + time noun + ’s + noun

• a day’s work
• an hour’s drive
• a week’s vacation

Plural Time Expression

number + plural time noun + ’ + noun

• two hours’ walk
• three days’ trip
• five years’ experience

Notice: If the time noun is plural (ends in -s), we only add an apostrophe (’), not ’s.

Common Uses

This structure is often used to describe:

• Distance:
  It’s a two hours’ walk from here.
• Duration of activities:
  She completed a day’s work in just a few hours.
• Experience or quantity:
  He has ten years’ experience in IT.
• Events or trips:
  We’re planning a three days’ trip.

Alternative Forms

You can often rewrite these expressions using “of”:

• a two hours’ walk → a walk of two hours
• a day’s work → the work of a day

The possessive form, however, is more natural and more often used in both spoken and written English.

Common Mistakes

Incorrect: two hour’s walk
Correct: two hours’ walk

Incorrect: three day’s trip
Correct: three days’ trip

Incorrect: one hours’ walk
Correct: one hour’s walk

Always check:

• Singular → ’s
• Plural → ’ only