Ther are going to build a school for the deaf.介词为何用for?

Ther are going to build a school for the deaf.介词为何用for? They are going to build a school for the blind. 请划分一下句子成分 越详 they are going to r____money to build a library for the hope we are going to build a school ___ (介词） this area 是in吗 翻译:I'm going to help the Forest Centre build new paths for a they _____ money to build a new school for the earthquake-hi They are going to build a b( )over the river the smiths are going to france for a vaction the smith are going to France for a vacation We are going to make() for the party. A.specia A new school was set up for( )deaf in the small town last ye —What are you going to do for the School Day?