The mood is one of a set of distinctive verb forms that are used to express modality. There are 3 moods in Russian: the Indicative, Subjunctive and Imperative.

Indicative Subjunctive Imperative
The verb expresses real actions in the present, past or future tense. The verb names a conditional action that could have happened (could happen) under certain circumstances. The verb expresses an order, incentive, request,warning or advice.

 

The Subjunctive mood

The subjunctive mood has 2 meanings: conditional and wishful.

  • Conditional is used in complex sentences with subordinate clauses: Если бы ты не победил ты не получил бы приза.

If you hadn't won you would not have gotten the prize.

  • Wishful is used in simple sentences :

Я бы слетал в Сочи и позагорал. I'd like to go to Sochi and sunbathe. The subjunctive is formed using the past tense form of the verb and the particle БЫ (sometimes Б): выиграл бы, пришел бы, она б сказала (would have won, would have come, she would have said ).

The subjunctive is not modified by person: Я решил бы, ты решил бы (I would have decided, you would have decided)

However it is modified by gender and number: решила бы, решило бы, решили бы

The tense category is not applicable.