Learning English - How To Say 'I Agree' In Different Ways

The video tutorial introduces five casual expressions that can be used instead of 'I agree' to sound more natural in English conversations. These expressions include 'Don't I know it', 'Preaching to the choir', 'You can say that again', 'You're telling me', and 'I couldn't agree more'. The tutorial provides examples of how to use these expressions in everyday situations, emphasizing their informal and fun nature compared to the formal 'I agree'.

What does the phrase 'preaching to the choir' imply in a conversation?

How can using casual expressions improve your conversational skills?