Do you know Alleniverson,he is a good basketball player.
假如他知道,你说：Oh ,you know.I's very good,you know,I like him very much.
假如他也喜欢,你说：He had play in Philadelphia 76ers team,but he isn't there now.Do you know he is in now?
假如他知道,你说：Soso,you are right.
假如他不知道,你说：OK,let me tell you.He is in Denver Nuggets team.
恩,后面的自己去想吧,我只能帮到这了!