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"year and a half" vs "one year and a half"

Both 'year and a half' and 'one year and a half' are correct phrases, but 'year and a half' is more commonly used in everyday English. The difference lies in the inclusion of the word 'one,' which is optional in this context.

Last Updated: March 23, 2024

year and a half

This phrase is correct and commonly used in English.

This phrase is a common way to express a period of one year and six months. It is used in informal and formal contexts.

Examples:

  • I've been working here for a year and a half.
  • She studied abroad for a year and a half.

Alternatives:

  • eighteen months
  • one and a half years
  • 18 months
  • 18 months' time
  • a year and six months

one year and a half

This phrase is correct but less commonly used in English.

This phrase is also correct and means the same as 'year and a half.' It is slightly more formal and less common in everyday speech.

Examples:

  • It took one year and a half to complete the project.
  • He waited for one year and a half before making a decision.

Alternatives:

  • eighteen months
  • one and a half years
  • 18 months
  • 18 months' time
  • a year and six months

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