Breakdown of Если бы не его вмешательство и оперативность, мы бы не спасли проект.
и
and
не
not
мы
we
проект
the project
Questions & Answers about Если бы не его вмешательство и оперативность, мы бы не спасли проект.
Why are the nouns вмешательство and оперативность in the nominative case? Shouldn't the negative не force them into the genitive case?
Normally, negated existence takes the genitive case. However, the fixed phrase если бы не (if it weren't for) is a special exception. It always requires the nominative case for the person or thing that influenced the outcome.
The translation says 'would not have saved.' Why is the verb спасли just in the normal past tense?
Russian conditionals do not have a separate 'past conditional' form like English does. The particle бы combined with a past tense verb (like спасли) covers both 'would save' and 'would have saved'. You rely entirely on context to know this happened in the past.
In the second clause, could I put the particles in a different order and say мы не бы спасли?
No, that would sound unnatural. When бы and не appear next to each other in a conditional clause, бы almost always comes first (бы не).
How does the word вмешательство (intervention) break down?
It is formed from the perfective verb вмешаться (to intervene or step in). The suffix -тельство is a common way to turn a verb into an abstract noun, similar to how English uses '-tion' or '-ment' (another example is строительство, meaning construction).