Breakdown of Когда мы зафиксировали сигнал, мой коллега прервал эксперимент.
мы
we
мой
my / mine
когда
when
коллега
colleague
эксперимент
experiment
сигнал
the signal
прервать
to interrupt (perf)
зафиксировать
to record, to track (perf)
Questions & Answers about Когда мы зафиксировали сигнал, мой коллега прервал эксперимент.
Why are both verbs (зафиксировали and прервал) in the perfective aspect here?
In Russian, a sequence of completed consecutive actions requires perfective verbs. The use of the perfective here shows that first the signal was recorded, and then the colleague interrupted the experiment as a result. If the actions were happening simultaneously, the imperfective aspect would be used.
The word коллега ends in -а. Why does it take the masculine modifier мой instead of моя?
Коллега is a common-gender noun. Its grammatical agreement matches the actual gender of the person being talked about. Because we see мой коллега, we know this specific colleague is male. For a female colleague, it would be моя коллега.
How does the prefix пре- change the meaning of the root in прервал?
The verb прервать (to interrupt) is built on the root рвать (to tear). The prefix пре- often indicates crossing a boundary, altering a state, or stopping an action. Figuratively 'tearing across' or cutting off the experiment gives us the meaning 'interrupted'.
Could we use записали instead of зафиксировали for 'recorded'?
You could, but зафиксировали is much more natural here. While записать is the everyday word for recording a song or writing down a note, зафиксировать is heavily used in scientific, technical, or formal contexts to mean registering, logging, or capturing a specific event or data point.
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