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"three decades ago" vs "three decade ago"

The correct phrase is 'three decades ago.' 'Decades' is the plural form of 'decade,' so it should be used when referring to a period of thirty years. 'Three decade ago' is incorrect because 'decade' should be pluralized to match the number three.

Last Updated: March 08, 2024

three decades ago

This phrase is correct and commonly used in English.

This phrase is used to refer to a period of thirty years in the past.

Examples:

  • Three decades ago, the internet was not widely available.
  • I remember visiting that place three decades ago.

three decade ago

This phrase is incorrect in English.


Alternatives:

  • three decades ago
  • thirty years ago
  • three ten-year periods ago
  • three sets of ten years ago
  • three periods of ten years ago

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