اذا لم تجد ما تبحث عنه يمكنك استخدام كلمات أكثر دقة.
The book introduces **Applied Linguistics** as a field that uses linguistic theories to address real-world language problems in areas such as language teaching, translation, sociolinguistics, and second-language acquisition. It explains the main **notions** related to language—such as linguistic competence, performance, and the relationship between language and context.
The book also outlines the key **principles** of applied linguistics, including:
* Connecting linguistic theory with practical applications
* Studying language within its social and cultural context
* Using scientific research to understand and solve language-related issues
Additionally, it presents various **definitions** of Applied Linguistics, showing how the field has developed from a focus on language teaching to a broader discipline concerned with communication, language policy, and multilingual societies. Overall, the book highlights how applied linguistics helps improve real-life language use and enhances educational and communicative practices.