next

I would say it is subject attribute .As the question shows, subject asnwers the question and the person who is next is the subject.

Hi,

You might also give an answer like 'It's an adjective'.

Clive

Just answer: Me

Who's next?

Me!

Hi, Clive.

I suspect that 'next' is a pronoun.

I just looked up my Longman Dictionary.

next (pronoun) the person or thing in a list, series etc that comes after the person or thing you are dealing with now:
e.g. What's next on the shopping list? (next = the next item; therefore a pronoun)
You're next. Ms. Williams. The doctor will be ready in a moment.

Hi,

Such words can be a bit hard to classify. (Usually, when a word is hard to classify, I figure it's an adverb.)

My dictionary includes

adjective 1. the nearest in order of time. 2. the first or soonest encountered or considered (next Friday: ask the next person).

It doesn't include any definition as a pronoun at all, but i

Hi, Clive.

What makes you think 'next' is an adverb?

"Usually, when a word is hard to classify, I figure it's an adverb." Is this the only reason?

Hi,

I didn't say it was an adverb.

Clive

Next is an adjective because it is modifying a pronoun.