Expanding your vocabulary is a great way to improve your overall English ability. Not only will you be able to speak English more naturally and fluently, but you will also be better at having conversations and listening to others in English. If you know more vocabulary, then it is easier to express yourself and understand others who are speaking English.
Each lesson in Section 7 covers one common English expression, idiom, or slang word. The lessons explain the meaning and provide many example sentences to help you understand and use this vocabulary when you speak English.