This Week’s Grammar Mailbox question is:

What is the difference between “some day” and “someday”?

Some day? Someday?

“Someday”, an adverb, refers to an unspecified time in the future.

E.g. Someday, I will be the king of the world and you all will regret messing with me.


“Some day”, a noun phrase, refers to an action or even that happens at some time in the future, though the exact day is still not specified.

E.g. Prof Chan said she would be available to see me some day next week.

Give it a try!

You need to get your resume ready because you are asked to attend an interview ______________ next week.

  1. someday
  2. some day


Write your answers in the comments sections. We will reveal the correct answer in our next post!

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