Question 1

Why is there no se (if) at the beginning of this sentence?

Accepted Answer

This sentence uses an advanced structure called conditional inversion. By putting the verb fosse (the imperfect subjunctive of ser) right after Não, we can drop the word se. The phrase Não fosse followed by a noun translates cleanly to the English 'Were it not for'.

Question 2

Could I still use se if I wanted to? How would the sentence change?

Accepted Answer

Yes! The standard way to say this is Se não fosse aquela manobra perigosa.... The meaning is identical, but dropping the se and using the Não fosse... structure sounds slightly more literary and emphatic, much like choosing 'Were it not for...' over 'If it weren't for...' in English.

Question 3

Why is the verb precisar in the conditional tense (precisaríamos) here?

Accepted Answer

This is a classic unreal conditional sentence. The first part sets up an imaginary or contrary-to-fact situation using the imperfect subjunctive (fosse). The second part states the hypothetical result of that imaginary situation using the conditional mood (precisaríamos).

Question 4

Why do we need the preposition de before mais prevenção?

Accepted Answer

The verb precisar (to need) requires the preposition de when it is followed by a noun or a pronoun. Even though English just says 'need more prevention' without a preposition, Portuguese requires precisar de, hence precisaríamos de mais prevenção.

Não fosse aquela manobra perigosa, não precisaríamos de mais prevenção.

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