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Use the imparfait for a past state, habit, description, or action in progress at the time you are talking about; use the plus-que-parfait for an action or state that had already happened before another past moment. Imparfait is the background inside the past scene (il pleuvait quand je suis sorti); plus-que-parfait is one step earlier than that scene (il avait plu avant mon arrivée).
same past scene → imparfait · before that past scene → plus-que-parfait
Both tenses can describe background, but they sit on different levels of the timeline. The imparfait describes what was true, repeated, or ongoing during the past scene you are narrating. The plus-que-parfait describes what was already completed before that scene began. If your sentence means was / used to / was doing, think imparfait. If it means had done / had been / had already happened, think plus-que-parfait.
A narrative often needs all three past layers: imparfait for the setting, passé composé for the event, plus-que-parfait for earlier context. Quand je suis arrivé, elle était fatiguée parce qu'elle avait travaillé toute la nuit: arrived is the event, was tired is the scene state, had worked is the reason from before the scene.
Quand j'étais enfant, je jouais souvent dehors.
When I was a child, I often played outside.
past habit → imparfait
Quand je suis arrivé, les enfants avaient déjà mangé.
When I arrived, the children had already eaten.
before the arrival → plus-que-parfait
Il faisait froid et les rues étaient vides.
It was cold and the streets were empty.
description of the scene
Les rues étaient vides parce que tout le monde était parti.
The streets were empty because everyone had left.
earlier cause → plus-que-parfait
imparfait of avoir / être + participe passé
The plus-que-parfait is a compound tense. It uses the imparfait of the auxiliary, then the past participle: j'avais compris, tu avais fini, elle était partie, nous nous étions levés. This is why learners confuse it with the imparfait: the auxiliary is in the imparfait, but the whole verb form means had done.
The auxiliary rules are the same as in the passé composé. Most verbs take avoir; Vandertramp movement verbs and pronominal verbs take être, with agreement where required. If you would say elle est partie in the passé composé, the plus-que-parfait is elle était partie.
J'avais oublié mon passeport.
I had forgotten my passport.
Elle était déjà sortie quand tu as appelé.
She had already gone out when you called.
Nous nous étions trompés d'adresse.
We had got the address wrong.
pronominal verb → être
Ils n'avaient jamais vu autant de neige.
They had never seen so much snow.
| Question | Tense | Example |
|---|---|---|
| What was the situation like? | imparfait | Il faisait nuit. |
| What used to happen? | imparfait | On allait souvent au parc. |
| What was in progress? | imparfait | Je lisais quand il est entré. |
| What had already happened? | plus-que-parfait | Il avait déjà fermé la porte. |
| What was the earlier cause? | plus-que-parfait | Elle pleurait parce qu'elle avait reçu une mauvaise nouvelle. |
| What belongs in a Type 3 si-clause? | plus-que-parfait | Si j'avais su, je serais venu. |
Do not use the plus-que-parfait just because the sentence is very far in the past. If the action is the main background at that past time, the imparfait is still correct: en 1998, j'habitais à Lyon. The plus-que-parfait requires a second past reference point: en 1998, j'avais déjà quitté Paris.
Do not replace every English had with the plus-que-parfait. English had can be possession: I had a car = j'avais une voiture, not j'avais eu une voiture unless you mean I had had a car before another past event. Translate the timeline, not the word.
In Type 3 si-clauses, the plus-que-parfait belongs after si and the conditionnel passé belongs in the result clause: si j'avais étudié, j'aurais réussi. Writing si j'aurais étudié is the same high-visibility error as si + conditional in Type 2.
When revising a French story, underline every past verb and mark its layer. Layer 1 is the current past scene: use imparfait for description and state. Layer 2 is the event that moves the story: usually passé composé. Layer 0 is earlier than the scene: use plus-que-parfait. This makes tense choice visual instead of intuitive guesswork.
TEF, TCF, DELF, and SLE writing tasks often ask you to narrate a problem, complaint, trip, or professional incident. This is where imparfait vs plus-que-parfait separates B1 from B2: j'étais en retard parce que le bus avait eu une panne is much stronger than a flat chain of passé composé verbs. The plus-que-parfait lets you explain causes before the main event, while the imparfait sets the scene. Use both deliberately in a complaint letter: describe the situation with imparfait, report the incident with passé composé, then explain prior causes with plus-que-parfait.
No. The plus-que-parfait uses an auxiliary in the imparfait, but the whole tense means had done or had been. Imparfait describes the past scene itself; plus-que-parfait describes what had already happened before that scene.
Use it when you step back from the main past scene to explain an earlier cause, preparation, regret, or discovery: je n'ai pas pu entrer parce que j'avais perdu mes clés.
Use the imparfait of être plus the past participle, with agreement: elle était partie, ils étaient arrivés, nous nous étions levés. The same être/avoir rules as passé composé apply.
Yes. If had means possession or a past state, use imparfait: I had a car = j'avais une voiture. Use plus-que-parfait only when had marks an action or state before another past reference point.