1.4 Research Questions. 8 1.5 The Research hypothesis. 8 1.6. Definitions of the Technical Terms Used in the Study. 8 1.6.1 Systemic Functional Grammar (Halliday) 8 1.6.2 Rhetoric. 11 1.6.3 Teaching English for Specific purposes (ESP) 12 1.7 Outline and the organization of the study. 15 Chapter 2: Review of the related literature 2.1. Overview.. 17 2.2. SYSTEMIC FUNCTIONAL GRAMMAR (SFG) 17 2.3. ENGLISH FOR SPECIFIC PURPOSES (ESP) 21 Chapter 3: Methodology 3.1. Overview.. 34 3.2. Research design. 34 3.3. Participants. 35 3.4. Instrumentation. 35 3.5. Data collection procedure. 38 3.6. Data Analysis. 38 Chapter 4: Results and Discussion 4.1. General overview.. 41 4.2. The Descriptive Statistics of participants. 41 4.3. Test data normality. 42 4.4. Description of the data and variables. 44 4.4.1. Distribution of respondents according to gender: 44 4.4.2. Frequency distribution of respondents by education level 46 4.4.3. Distribution of respondents according to age. 47 4.5. Frequency distribution of respondents in terms Rhetoric and Systemic Functional Grammar usage  48 4.4 The graph shows these distribution: 49 4.6. Discussion and analysis, research questions and hypothese………………………49 Discussion. 56 Chapter 5: Summary and Conclusion 5.1 Overview.. 59 5.2. Summary. 59 5.3. conclusion. 60 5.4. Implications. 60 5.5. Limitation of the study. 61 5.6. Directions for future studies. 61 References. 62 Appendices Appendix 1. 71 Appendix 2. 74 List of tables Table1 (3.1): 37 Table (4.1 )Frequency distribution of participants. 41 Table (4.2) test data normality. 42 Table (4.3) test data normality. 44 Table (4.4) Frequency distribution of respondents by gender 45 Table (4.6) Frequency distribution of respondents by age. 47 . 50 Table (4.9)The t-test is used to verify this hypothesis. 51 Table(4.10) Independent Samples Test 51 Table(4.11) Group Statistics. 52 Table(4.12) Independent Samples Test 53 Table(4.13) RHETORIC AND SFG.. 54 Table(4.14) Group Statistics. 55 Table(4.15) Independent Samples Test 56