Final answer:
To transform the sentences as requested, use the plus-que-parfait for the first verb and the imparfait for the second verb. The plus-que-parfait indicates a past action before another past action, while the imparfait describes habitual actions or ongoing states in the past.
Step-by-step explanation:
To transform the sentences as requested, you need to use the plus-que-parfait for the first verb and the imparfait for the second verb. The plus-que-parfait is used to indicate a past action that occurred before another past action. Remember that the plus-que-parfait is formed with the auxiliary verb 'avoir' or 'être' in the imparfait followed by the past participle of the main verb. The imparfait, on the other hand, is used to describe habitual actions or ongoing states in the past. Let's see an example:
- J'avais mangé un sandwich quand il est arrivé. (I had eaten a sandwich when he arrived.)
In this example, 'avais mangé' is the plus-que-parfait form of the verb 'manger' and 'est arrivé' is the imparfait form of the verb 'arriver'.
Learn more about Using the plus-que-parfait and imparfait in French sentences