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Depuis, pendant, il y a, dans and en: duration, origin and deadline

CEFR B2

What you will learn

  • Match depuis, pendant and il y a to continuity, bounded duration and distance into the past.
  • Distinguish dans as a delay before a future event from en as the time needed to complete an action.

Before you start

  • Recognise the vocabulary and forms shown in this lesson’s key idea and paradigm.

The idea

The choice does not depend on the number alone: distinguish continuity from an origin, bounded duration, distance into the past, future delay and completion time.

“Depuis” says since when, and it goes with the present if the thing is still going on: “j'habite ici depuis trois ans” — and I still live here. That present tense is the surprise, because English uses a perfect there.

“Pendant” presents a total duration as a bounded interval: “j’ai vécu à Lyon pendant deux ans”. The interval may be over, but it can also be current or future: “je travaillerai pendant deux heures”. In many contexts the preposition can be omitted: “j’ai vécu deux ans à Lyon”.

“Il y a” says how long ago something happened, and always looks back: “je suis arrivé il y a deux ans”. Do not confuse it with the existence phrase, which is spelt identically.

“Dans” says how soon something will happen, and always looks forward: “le film commence dans dix minutes”. And “en” says how long it takes to complete: “il a fait le trajet en une heure” — it took him an hour, he did not leave in an hour's time.

That last pair is the one English blurs, because your “in” does both jobs: “in an hour” can mean either. French splits them: “dans” marks a future point, “en” measures the effort.

Working paradigm

Time relationExpressionTypical tense
continue depuisdepuisprésent
durée délimitéependantprésent / passé / futur
événement passéil y apassé
début futurdansfutur
temps de réalisationenpassé / futur

The numerical duration alone does not decide: the event’s relation to speaking time matters.

How it sounds

  • Le technicien terminera la réparation en quarante minutes.The action is not yet complete. The sentence measures the time needed to finish it. Completion time selects en, not dans.
A timeline separates an ongoing activity, a closed interval, a past point, a future departure and a completion stopwatch.
Identify the time relation first; then choose the expression.

Check objective 1

View the illustration

We started in January 2024 and continue today: Nous collaborons avec ce laboratoire ___ janvier 2024.

Choose an answer

Answer available without interaction

Answer: depuis — The collaboration continues: depuis links present-tense collaborons to its starting date, January 2024.

The present shows an ongoing collaboration that began in January 2024.

Check objective 2

View the illustration

The meeting lasted twenty minutes. Express the time needed to complete it: elle s’est terminée ___ vingt minutes.

Choose an answer

Answer available without interaction

Answer: en — The sentence measures the twenty minutes needed to complete the meeting.

The sentence measures the twenty minutes needed to complete the meeting.

When it doesn't hold

What breaks the rule, said out loud. Hiding it is what makes you feel cheated in the exam.

  • Still continuingElle travaille ici depuis 2022.
  • Finished periodElle y a travaillé pendant quatre ans.
  • Starts laterElle commencera dans une heure.

What your own language pushes you to say

Wrong Je vis ici il y a cinq ans.

Right Je vis ici depuis cinq ans.

The present shows that the situation continues; il y a would date a past event.

Challenge: apply both rules

Solve both cases and justify each choice: 1) Una propuesta responde «pendant» a este caso: «Nous collaborons avec ce laboratoire pendant janvier 2024.». Elige la única forma válida. 2) Una propuesta responde «dans» a este caso: «La réunion s’est terminée dans vingt minutes.». Elige la única forma válida.

Answer available without interaction
  • Match depuis, pendant and il y a to continuity, bounded duration and distance into the past.
  • Distinguish dans as a delay before a future event from en as the time needed to complete an action.

Answer: depuis · en

The present shows an ongoing collaboration that began in January 2024. The sentence measures the twenty minutes needed to complete the meeting.

Curriculum alignment and sources

Continue along this corridor

Practise this: Depuis, pendant, il y a, dans, enAdvanced French negation: restriction, combinations and expletive neGérondif, participe présent and adjectif verbal: three -ant formsPronominal verbs: classes, auxiliary and participle agreementConditional for unconfirmed information: present, past and sourceNominalisation in written French: formation, complements and style