### Theoretical Framework
#### Systemic Functional Linguistics (SFL)
Systemic Functional Linguistics (SFL), developed by M.A.K. Halliday, views language as a social semiotic system. It emphasizes the functions of language in social contexts and focuses on how language is used to construct meaning.
#### Appraisal Theory
Appraisal theory, a part of SFL, examines how language expresses attitudes, emotions, and judgments. It consists of three main subsystems:
- **Attitude**: Refers to the expression of feelings, including affect (emotions), judgment (evaluations of behavior), and appreciation (evaluations of things).
- **Engagement**: Concerns the ways speakers position themselves in relation to the propositions and proposals they put forward.
- **Graduation**: Involves the grading of phenomena by intensity or quantity.
#### Register