Cách sử dụng
"First off" is an informal way of starting a conversation when you want to make a point or introduce a topic. It means "Firstly" or "To begin with". You can use this phrase in many different situations, such as when giving instructions, stating your opinion, or making a list of things you want to discuss. Just remember that "first off" is considered more casual than formal, so it's best to use it with friends or family rather than in professional or academic settings.