Questions & Answers about היום חזרנו על זמן עבר, זמן הווה וזמן עתיד.
By itself, לחזור often means to return or to come back.
But the full expression לחזור על means to go over, to review, or to repeat something.
So:
- חזרנו = we returned / we went back
- חזרנו על... = we reviewed / we went over...
In this sentence, because it is followed by על and then grammar topics, the meaning is clearly we reviewed.
The ending -נו is the key.
חזרנו is past tense, first person plural:
- חזרתי = I returned / reviewed
- חזרת = you returned / reviewed
- חזרנו = we returned / reviewed
So -נו is the past-tense ending for we.