What should a sentence meant to emphasize something using a question tag end in?

Consider these two sentences:

But aren’t you a superhero?

But aren’t you a superhero.

One of them ends in a question mark while the other ends in a full-stop. My grammar checker doesn’t respond to either of them. So, which one is correct?


Your grammar checker is confused by But.

Use a question mark for a direct question, like your first example. Use a period for an indirect question. Your example can only be a direct question so it takes a question mark.

However, consider

You are a superhero.


You are a superhero?

There are occasions when either construction is fine depending on what you’re trying to accomplish.

Or even

You are a super hero!

Source : Link , Question Author : Abhishek Kumar , Answer Author : Stu W

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