An user English
says…

What's that
  book
📖
Noun
  you've
  got
Verb
  there
Adverb
?

What's that book you've got there?
Words and sentences
New
what's that

  1. (colloquial) What is that?
  2. (colloquial) What was that? Synonym of say again

📖
New
book

New
you've

Contraction of you have.

New
got

  1. Expressing obligation; used with have.
  2. (colloquial) Must; have/has (to).
  3. (colloquial) Have/has.

New
there

New
what's

  1. What is.
  2. What has.
  3. What does.

New
that

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