譯英文!!!thx

1. Computer has become primarily/majorly/mainly the
entertainment for youngsters/teenagers.

2. Computer has become the major/main entertainment for
youngsters/teenagers.

Computers have become the main source of entertainment for young people.

computer becomes the main entertainment method of teenagers

2008-03-29 00:47:21 補充：
"computer becomes the main entertainment of teenagers"

it is better

Computer has been became the entertainment of teenages