Live with me and Jack in good city (7)
I believe the answer is:
beijing
'city' is the definition.
(Beijing is an example)
'live with me and jack in good' is the wordplay.
'live with' becomes 'be' (synonyms. I am not sure about the 'with' bit.).
'me' becomes 'I'.
'and' says to put letters next to each other.
'jack' becomes 'J' (playing card abbreviation).
'good' becomes 'g' (abbreviation).
'be'+'i'+'j'+'in'+'g'='BEIJING'
Can you help me to learn more?
(Other definitions for beijing that I've seen before include "Gin jibe in China" , "Eastern city" , "Chinese capital" , "Capital of China" , "2008 Olympics host" .)