Questions & Answers about Урок триває годину.
Yes. If you explicitly say “one hour,” you must use the feminine accusative form одну, because година is feminine:
Урок триває одну годину.
However, native speakers often omit одну when the duration is clear from context.
Approximate phonetic:
U-ROK try-VA-je ho-DY-nu
Stresses fall on the first syllable of Урок, the second syllable of триває, and the second syllable of годину.
Yes. A common alternative is займає (3 sg. of займати). It shifts the nuance from “it lasts” to “it takes (time)”:
Урок займає годину.
Both are correct; тривати focuses on ongoing duration, займати on how much time something consumes.
Absolutely. You continue to use the accusative for the time expression:
Урок триває 60 хвилин.
Here хвилин is the accusative plural of хвилина (“minute”) to indicate “for 60 minutes.”
You would switch to the past tense of тривати. Since урок is masculine, use тривав:
Урок тривав годину.
If the subject were feminine (e.g. лекція), you’d say тривала годину.