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Anonymous Posted 15 years ago
Grammar

What's the difference between 5-year old and 5 years old?

What's the difference between 5-year old and 5 years old?

My colleague corrected this in my report, as it was a grammatical error, and tried convincing me that there is no such.

(just cos he is native speaker, I didnot argue much about this)
  

Top answer

Let's correct them and put them into sentences: He is a 5-year-old boy . -- The phrase is hyphenated and 'year' is singular because it is an adjective modifying 'boy'. He is 5 years old .

  • Let's correct them and put them into sentences: He is a 5-year-old boy .
  • -- The phrase is hyphenated and 'year' is singular because it is an adjective modifying 'boy'.
  • He is 5 years old .
  • -- Here, 'old' is a predicate adjective and '5 years' is an adverb modifying 'old'.
  • No hyphenation.
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1 Answers
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Let's correct them and put them into sentences:

He is a 5-year-old boy. -- The phrase is hyphenated and 'year' is singular because it is an adjective modifying 'boy'.

He is 5 years old. -- Here, 'old' is a predicate adjective and '5 years' is an adverb modifying 'old'. No hyphenation.

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