Chpater 1 Introuction 1.1 Definition of Lexicology 1.2 The Relationship of Lexicology with Other Branches of Linguistics 1.3 Sub-branches of Lexicology 1.4 Aims and Singificance of the Course of English Lexicology Chapter 2 Sources of the English Vocabulary 2.1 Elements Making up the English Vocabulary 2.2 Interrelation between Native and Foreign 2.3 Conclusion Chapter 3 English Word-Structure and Word-Formation 3.1 Morphemic Analysis 3.2 Derivation 3.3 Conversion 3.4 Compounding 3.5 Minor Ways of Word-Buliding 3.6 Conclusion Chpater 4 Semantic Analysis of Word 4.1 Meaning and Motivation 4.2 Types of Meaning 4.2 The Semantic Analysis of Words 4.4 The Semantic Relationship between Words:Synonyms & Antonyms Chapter 5 Changeo of Meaning 5.1 Four Major Tendencies That Lead to Change of Meaning 5.2 Figures of Speech Chapter 6 English Idioms Chapter 7 American English Chapter 8 Regional Varieties of the English Language Chapter 9 English Lexicoraphy Appendix Glossary of Some Linguistic Terms References