Why French needs two past tenses
English often uses one past form; French splits the past into 'events' (perfect) and 'background' (imperfect).
English usually gets by with a single simple past: I played, I watched, I was, I ate. French splits that one job between two tenses, and choosing the right one is the most important past-tense skill at IGCSE.
Here is the core idea in one line:
- Perfect (passé composé) = a completed action, often a single event. J'ai mangé une pizza. (I ate a pizza.) → It happened once and finished.
- Imperfect (imparfait) = what things were like — description, feelings, weather, and repeated or habitual actions. Quand j'étais petit, je mangeais beaucoup de pizza. (When I was little, I used to eat a lot of pizza.) → ongoing background, no clear end.
A simple test: ask "is this a single completed event, or am I setting the scene / describing a habit?"
| English clue | Tense | French example |
|---|---|---|
| "I did / I have done" (one event) | Perfect | j'ai joué — I played |
| "I used to do / I would do" (habit) | Imperfect | je jouais — I used to play |
| "I was doing" (in progress) | Imperfect | je jouais — I was playing |
| Description: it was sunny, I was tired | Imperfect | il faisait beau, j'étais fatigué |
| Sudden event interrupting the scene | Perfect | …quand le téléphone a sonné — …when the phone rang |
Worked mini-example. Il faisait beau et je lisais un livre quand mon ami a téléphoné. (It was sunny and I was reading a book when my friend phoned.) The first two verbs are imperfect (the background scene: weather + an action in progress); the last verb is perfect (the single event that broke into the scene).
- Perfect = completed, one-off event (j'ai mangé — I ate).
- Imperfect = description, feelings, weather, and habits (je mangeais — I used to eat / was eating).
- English 'used to' and 'was …-ing' both signal the imperfect.
- In a story: imperfect = the scenery, perfect = the events that happen.