actress的前面用什麼冠詞

前面用冠詞the或者an，例如：

1、Here is an actress who could have her pick of any part這是一個角色任她挑選的女演員。

2、Jane is determined to stake her claim as an actress.簡決心主張自己作爲一名女演員的權利。

3、He was very frank about his relationship with the actress.他對自己和那位女演員的關係直言不諱。