Answer:
1. Jerry
2. the girl from the city.
Step-by-step explanation:
1. The proper noun Jerry is the appositive of the sentence, and it has the function of adding more information about 'My brother'
2. The noun phrase "the girl from the city" is the appositive phrase; it describes something about 'My friend' , a little extra information that doesn't alter the meaning of the sentence if it is excluded.