Mr.Brown has taught English in the school ( since 2000).对括号部

How long has
祝你学习进步,更上一层楼!(*^__^*)
有不会的可以再问我:）
再问： be famous for 和be famous as 的区别 请教一下，谢了！
再答： (1)be famous for表示“以……（事物）著名”。如： Heze is famous for its peony flowers.菏泽牡丹闻名天下。 Scotland has many lakes and mountains,and is famous for its beautiful country-side. 苏格兰有许多湖泊和山脉，并以其乡村美景闻名于世。 (2)be famous as表示“以……（身份）著名”。如： Wang Junxia is famous as a good runner,she won a gold medal and a silver medal in the 26th Olympic Games. 王军霞是一位很著名的长跑运动员，她在第26届奥林匹克运动会上获得一枚金牌和一块银牌。