请问be useful for sb是不是短语
请问be useful for sb是不是短语
be useful for sb.对…有好处; be useful to sb.对某人有用;
be important to sb和be important for sb?有这两个短语吗?
be useful for=什么?
be useful to和be useful for的区别
是be useful for 还是be useful to?
be useful to和be useful for的区别?
be suitable for sb 有be suitable to do适合做这个短语?
请问:be up for sb是何意?
be sth for sb
be vailable for sb.
be true for sb.