Originally Posted by
katerina.pata 
We seldom use short forms after names and nouns. We do use some, as in your example: Peter's got a book.
The children've visited ... Not common in writing, but you'll hear it - though there will be short vowel between /n/ and /v.
Peter'll go to the cinema, I think......Our teachers've told us not to cheat.
Once again, not common in writing, but you'll hear them, with the short vowel.
Is it not more common to use short forms after pronouns only?
A lot depends on the final sound of the noun and the sound of the contraction itself. As many pronouns end in a vowel sound, it's easy to follow them with a contracted form.
Paul's :tick: .....Paul'll X/? .....he's :tick: .....he'll :tick:......there'll ?
Mary'd left :tick: .....Fred'd left X/?
There's :tick: .....There're X/?
