This book is a textbook for learners who want to advance to the next level based on their basic knowledge of Spanish, so that they can complete Spanish grammar on their own, understand accurate grammar and sentence structures, and acquire rich expressions.
This book is designed to help students learn grammar and expressions while solving problems, and to help them identify and improve their grammar deficiencies. Therefore, we hope that all Spanish learners who use this book will diligently study and advance to a higher level.

This book is designed to help learners with beginner-level Spanish grammar knowledge perfect their Spanish grammar skills and acquire useful expressions.
This book is comprised of 25 problem sets, with explanations and Korean translations to help you learn Spanish on your own.
The problems in each set are selected from grammar points that learners may make errors in or miss during the learning process, and are designed to help learners acquire a rich range of Spanish expressions.
Each chapter is structured as follows to allow learners to study on their own.

1.
Chapter I consists of 25 sets of various grammar-related and expression-related questions, from Prueba 1 to Prueba 25.

Grammar questions: Spanish learners will be able to practice and check their grammatical knowledge through various sentences.
By reviewing what you learned in the grammar book and solving problems, you will be able to check the grammar items you are lacking in.
In particular, we aimed to increase the completeness of grammar knowledge by composing problems with grammar items that learners may make errors or miss, and grammar items and phrases that learners need specific explanations.
Expression questions: This allows you to learn practical expressions frequently used in Spanish through questions.
You can learn the expression by inferring its meaning by filling in the blanks in useful expressions.

2. Chapter II contains explanations of the grammar content and expressions of a total of 250 questions presented from Prueba 1 to Prueba 25.
First, the key sentence patterns of the relevant questions were presented in a table to help learners identify the main sentence patterns.
The following provides the correct sentences with the blanks filled in for each question, marked with , and includes explanations for the corresponding questions.
This section contains the grammar points you need to know about each grammar item along with explanations of the problem.
Additionally, parts that require additional explanation are marked with and contain the content that you need to learn.
These explanations will help learners gain a broader understanding of grammar items.

3. Chapter III provides Korean translations of the Spanish sentences for each question from Prueba 1 to Prueba 25 for learners' reference, and includes the correct answers to each question.

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