Question 1

Why is the verb fosses used here instead of a normal past tense like eras?

Accepted Answer

The phrase como se (as if) introduces a hypothetical or unreal situation. In Portuguese, this always triggers the Imperfect Subjunctive tense. Since you aren't actually a spy, you must use fosses to show it is an imaginary scenario.

Question 2

Ser (to be) and ir (to go) share the same past tense forms. Which one is fosses here?

Accepted Answer

Here, fosses is the verb ser. You can tell from the context: acting as if you were a spy makes sense, whereas acting as if you went a spy does not. The verbs ser and ir share the exact same conjugations in both the simple past and the Imperfect Subjunctive.

Question 3

Could I say tens que agir instead of tens de agir?

Accepted Answer

Yes! In everyday spoken Portuguese, ter que and ter de are used interchangeably to mean have to. Traditional grammar prefers ter de for expressing a strong duty or obligation, which is why it is used here, but either is perfectly fine.

Question 4

If the person being spoken to was a woman, would um espião change?

Accepted Answer

Yes, the noun would change to match her gender. Words ending in -ão have a few different feminine endings, but for this word, the feminine form is espiã. The end of the sentence would become como se fosses uma espiã.

Tu tens de agir como se fosses um espião.

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