The textbook contains a theoretical explanation of the formation and use of subjunctive tenses, an analysis of the features of the use of tenses in conditional sentences, and grammatical exercises that allow you to learn, consolidate and activate grammatical and lexical material. All exercises are built on common vocabulary and provide the principle of repetition of both vocabulary and grammatical phenomena. The book consists of modules in order of increasing difficulty.The collection of exercises is intended for students of non-linguistic universities and anyone who wants to learn Spanish on their own.