Simple Past:
* Elle était (formal) - This is the most common way to say "she was" in the simple past tense.
* Elle a été (formal) - This is used when emphasizing the completion of an action.
Past Continuous:
* Elle était en train de... (formal) - This translates to "she was in the process of..." and is used to describe an action that was ongoing in the past.
Imperfect:
* Elle était (formal) - This is the same as the simple past, but it is used to describe a state or a repeated action in the past.
Examples:
* Elle était belle. (She was beautiful.)
* Elle a été malade. (She was sick.)
* Elle était en train de lire. (She was reading.)
* Elle était toujours là. (She was always there.)
Note: The formal "elle" is used for all genders in French. The informal "elle" is only used when referring to a female.