Hello everyone, today’s lesson on idioms about personalities is dedicated to a group of my students and I hope they will recognize themselves in this and remember these idioms more easily.

Dark Horse 🐎
A person who doesn’t give away their skills or abilities but can surprise others with them.

Smart cookie 🍪
Someone who is good at something or quite knowledgeable and intelligent.

Rough diamond 💍
Someone who seems impolite but is not, and has a kind heart and good character.

Example:
Teachers do not only teach. They also learn a lot from their students and many of them were dark horses in class who surprised not only the teachers but other classmates with their skills. Those seemingly rough diamonds turn into smart cookies and their English is just a tool for them to show the knowledge to the world.