1、Rock music is OK,and so is skiing.
=Rock music is OK,and (skiing) is OK as (well).
2.Tom Hanks plays a man named Chuck Noland.
Tom Hanks plays a man (who) is (named/called) Chuck Noland.
3.Chuck is always so busy that he has little time for his friends.
=Chuck is always so busy (as to) have little time for his friebds.
4.In order to survive,Chuck develops a friendship with a volleyball he calls Wilson.
=Chuck developes a friendship with a volleyball he calls
Wilson (so) as (to) survive.