[Support] you must be Carol

[jctgf]

Hi, you must be Carol.

Hi, you might be Carol.

Hi,
Suppose you make and appointment with a real state broker. You both agree to meet at a certain place, at a certain hour.
When you see the lady that you presume is Carol (the real state broker), you say one of the sentences above.
Which one is the right one and why?
Thanks.

[Deepurple]

Originally Posted by jctgf

Hi, you must be Carol.

Hi, you might be Carol.

Hi,
Suppose you make and appointment with a real state broker. You both agree to meet at a certain place, at a certain hour.
When you see the lady that you presume is Carol (the real state broker), you say one of the sentences above.
Which one is the right one and why?
Thanks.

Must: absolutely sure.
Might: Not too sure. Might be or might not be.
(Not a teacher)

[2006]

Originally Posted by jctgf

Hi, you must be Carol. But you are not sure. If you were sure, you would say "Hi Carol, I am...".

Hi, you might be Carol. I don't think any native speaker would say that.

Hi,
Suppose you make and appointment with a real state broker. You both agree to meet at a certain place, at a certain hour.
When you see the lady that you presume is Carol (the real state broker), you say one of the sentences above.
Which one is the right one and why?
Thanks.

2006

[riverkid]

Originally Posted by jctgf

Hi, you must be Carol.

Hi, you might be Carol.

Hi,
Suppose you make an appointment with a real state broker. You both agree to meet at a certain place, at a certain hour.
When you see the lady that you presume is Carol (the real state broker), you say one of the sentences above.
Which one is the right one and why?
Thanks.

It's not a matter of right or wrong, JC. It's a matter of the semantic meaning fitting the situation. There's nothing wrong with "You might be Carol", it just doesn't fit the situation.

Because so many circumstances point to it being Carol, 'must' is the most natural. 'must' says, "Putting together all the facts available to me, this is the only logical conclusion". But, in the final analysis, it just might not be Carol.

Someone could say, "You just might be Carol" as a kind of joke, an understatement.