has being的用法和樣例：
例句
- The meeting with the German distributor has been advanced from11: 00 to9: 30.
與德國銷售人員的會晤由11：00提前到9：30。 - He has been a teacher since1960.
他自1960年以來一直擔任教師。 - He has been in practice for twenty years.
他已有20年的實踐經驗。 - As can be seen, Shanghai has being changed greatly in recent years.
可以看出，上海近年來發生了巨大的變化。
