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(xiāo)售人員的會(huì )晤由11：00提前到9：30。 - He has been a teacher since1960.
他自1960年以來(lái)一直擔任教師。 - He has been in practice for twenty years.
他已有20年的實(shí)踐經(jīng)驗。 - As can be seen, Shanghai has being changed greatly in recent years.
可以看出，上海近年來(lái)發(fā)生了巨大的變化。
