Questions & Answers about Я не доверяю этой фальшивой жертве.
Why is этой фальшивой жертве in the dative case here?
The verb доверять (to trust) always requires its object to be in the dative case. Even though 'victim' is a direct object in English, in Russian you are conceptually giving your trust to someone. Therefore, the nominative эта фальшивая жертва becomes этой фальшивой жертве.
This lesson focuses on the instrumental case with verbs like притворяться (to pretend). Since the victim is 'fake', why aren't we using the instrumental case here?
The grammatical case is always dictated by the governing verb in the clause. Here, the action happening to the victim is доверять, which strictly demands the dative. If you wanted to describe the actual act of faking it using this lesson's grammar, you would use the instrumental: Она притворяется жертвой (She is pretending to be a victim).
Could I use поддельной instead of фальшивой to mean 'fake'?
Not really. While both mean fake, поддельный is used for counterfeit physical objects, like a forged document, fake money, or a knock-off watch. Фальшивый is used for insincere, phony behavior or emotions, such as a fake smile, fake tears, or a person playing the role of a victim.
What is the perfective equivalent of доверять, and could we use it here?