- Importance of English idioms
  - Interesting parts of language
  - Commonly used in all language styles
  - Increase language skills
- Definition of an idiom
  - Unique expression based on traditional use
  - Fixed group of words, single word, or sentence with special meaning
  - Meaning not guessable from structure
- Examples and usage
  - To spill the beans means to reveal a secret
  - Essential part of the language
  - Enhances fluent communication with foreigners
  - Impresses teachers and students
  - Benefits translation internships and career growth
- Features of English idioms
  - Vary in length
    - Short: Indian summer
    - Long: All good things come to an end
  - Different structures
    - Irregular but clear meaning: Good friends with
    - Regular structure but unclear meaning: To have a bee in one's bonnet
    - Both irregular structure and unclear meaning: Through thick and thin
  - Fixed and partly fixed idioms
    - Fixed: A stitch in time saves nine
    - Partly fixed: To come to a bad end
  - Special meanings
    - To rain cats and dogs means to rain very hard
  - Absolute words
    - Heather and heather means in all directions
  - Represent semantic units
    - Make up one’s mind equals decide
  - Made of commonly used words
    - Once in a blue moon means very rarely
  - Created using alliteration, rhyme, and repetition
    - Alliteration: Black and blue
    - Rhyme: Rough and tough
    - Repetition: Again and again
- Significance in English learning
  - English is rich in idiomatic expressions
  - Idioms are essential to general vocabulary
  - Accepted in spoken, written, colloquial, formal, and slang styles