第1个回答 2010-08-19
it's important for somebody to do something.
第2个回答 2010-08-19
doing sth is very important to sb.
to do sth. is very important to sb.
第3个回答 2010-08-19
donging sth. is very\too important for sb.
第4个回答 2010-08-19
it is important for sb to do sth