it is fun for sb to do sth?
It is possible for sb(sth) to do sth
是sth is important to sb还是 it is important for sb to do sth?
造句It is+a.+for sb.+to do sth.
It is adj 造句 for sb to do sth 造句
Is it necessary for sb to do sth 同义句
find it (is) +adj+for sb.+to do sth.
it is easy for sb to do sth
It is+adj for sb to do sth 造句
It is interesting for sb.to do sth造句
用it is hard for sb to do sth造句
It is+adj (for sb) to do sth
it is probably hard for sb to do sth