in preparation for
provide sth for sb还是to sb
praise sb for doing sth
offer sth for sb还是to sb
its time for sb to do sth什么意思
its adj for sb to do sth什么意思
give sth to sb还是for sb
its adj for/of sb to do sth区别
tell sth to sb还是for sb
show sth to sb和show sth for sb