customaryforsb是什么意思
show sth to sb和show sth for sb
give sth to sb还是for sb
its time for sb to do sth什么意思
bring sth to sb还是for sb
set an example to sb还是for sb
its adj for/of sb to do sth区别
provide sth for sb还是to sb
offer sth for sb还是to sb
its adj for sb to do sth什么意思