Breakdown of L'opération a duré quatre heures.
quatre
four
l'heure
the hour / o'clock (f)
durer
to last
l'opération
the operation (f)
Questions & Answers about L'opération a duré quatre heures.
How does l'opération demonstrate nominalization in this context?
L'opération is the noun form (nominalization) of the verb opérer (to operate). Using this noun as the subject allows you to state a fact cleanly and concisely. Without nominalization, you would have to use a much longer verbal clause, such as Ils ont opéré le patient pendant quatre heures (They operated on the patient for four hours).
Why isn't there a preposition like pour or pendant before quatre heures?
The verb durer (to last) takes a direct measurement of time without any preposition. English speakers often want to add pour because we sometimes say "lasted for four hours," but in French, it is simply durer quatre heures. You only need a preposition like pendant when using an active verb, as in Il a opéré pendant quatre heures (He operated for four hours).
If we restructured the sentence so the time expression came before the verb, would duré need to agree with it?
No. A common B2 trap is thinking that expressions of time or measurement are direct objects. Even in a phrase like les quatre heures que l'opération a duré, the past participle duré remains invariable. This is because quatre heures answers the question "how long?", not "who?" or "what?". Verbs of measurement like durer, coûter (to cost), and peser (to weigh) do not make past participle agreements with their measurements.
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