1. How is "there" used in the following? Please explain how one can use it in such a way. Is this too informal for writing?
"I expect there'll be crouds at the concert, won't there?"
Yes, I believe you can say "There will be a crowd/it will be crowded". It is not informal.
Can you explain the use of "won't there" at the end of the sentence? How is this justifiable?
Originally Posted by Francois
Amy: Phoebe passed her exams last week.
Joey: Cool! Won't there be a party before she goes on vacation?
=> I wonder if there will be a party.
Re: "won't there?"
..., won't there (be a party)?
Originally Posted by mas94010
There will be a party, won't there (be a party)? Modern (OK)
There will be a party, will there not be (a party)? Very Traditional
won't is the contracted form of will not,
will not => willn't => won't
The vowel "i" and the consonant "l" combine to form a new vowel "o". That is, will => wo
The apostrophe (') replaces the vowel "o" of not.
That is, not => n't
Hope that helps.