An idiom is a group of words that don't always mean what they seem to mean. They have hidden meanings that are not literal. For example, "raining cats and dogs" doesn't mean that cats and dogs are falling from the sky, but rather it's raining very heavily. Idioms make language more interesting and can add emotion and extra meaning to what people say.

Idioms are commonly used in language because they can convey a lot of meaning in just a few words. They add depth and nuance to language and can help speakers express themselves in a more colorful and interesting way.

Throughout this series of lessons, you will become familiar with frequently used English idioms. Each idiom will be presented with a definition, five examples of its usage, and audio recordings featuring different speakers. This approach will help you understand the meaning of each idiom and how to appropriately use it during a conversation.