In the Know student's book presents idioms in context, then gives students the opportunity to learn their meaning, form, and use. A wide array of activity types makes this book a delightful way to learn the meaning and use of hundreds of common idioms, and the free audio CD lets learners hear these idioms in context. The Cambridge Dictionary of American Idioms provides definitions and examples of 5,000 idioms currently used in American English, making it the last word on American idioms today.