Knock on Wood

Coat chain: Let's master english. To day's expression is, knock on wood. What does this expression mean? We use it when we hope that our good luck will continue. So for example, i haven't had a cold in six months. But do i want a cold? Of course not. I want my luck to continue. In america, we don't just say knock on wood - we also look for wood and we knock. Ok, let's check out the dialogue. coat chain: Hello everybody. And welcome to easy english expressionyou and me every day. Come on, let's master English.