became的翻译，读音

例句

The situation became harder and harder. 形势越来越严峻。

He was a teacher before he became famous. 他成名前是一名教师。

She became quite cold and distant with me. 她对我变得相当冷淡和疏远。

They were friends before they became lovers. 他们在成为恋人之前是朋友。

She trained as a teacher and then became a lawyer. 她先接受教师培训，然后成为一名律师。