Learn English – the difference between: “two-day” and “two days”


I would like to know which would be the correct form:

  • a major two-day auction
  • a major two days auction

The duration of the auction is two days. Which form is the right one to use?

Best Answer

First variant is OK, the second is almost OK (the apostrophe is absent):

"a major two-day auction"

"Two-day" is an adjective here, written as one word.

"a major two days' auction"

" two days' " is a possessive form ("an auction of two days").

First variant is more common to use.