Question

标出句子成分With many companies and universities in Beijing moving to the area , it will be home

With many companies and universities in Beijing moving to the area , it will be home to 2.5 million people living across 2,000 square kilometers, the Beijing News noted.

Answer 1

with表伴随，是状语，it是主语，will be是系动词，home是表语，to表指向，living across 2,000 square kilometers是定语，修饰2.5million people。
be home to（为……的所在地），live across（住在……对面）
整句话翻译是：随着在北京的很多公司和大学移到别的地区，那些地区会成为那些远居2000平方千米的250万人民的地方（家）。