friendly adj.形容词, He is a friendly person. They showed a friendly greeting. adv.副词
To describe a friend: close friend, best friend, good friend, terrific friend, lovable friend,loyal friend,longtime friend, old friend, honest friend, supportive friend, humorous friend, kind friend, dependable friend, new friend.
friended,friending 形容词
acquainted 结识的 adj.形容词