In this first lesson, you’ll learn one of the most essential elements of Korean sentence structure: 이다 We’ll look at how to use it in different speech levels and practice making basic self-introductions. Let’s get started!1. Meaning이다 is attached to a noun and is used to describe what someone or something is. It plays a similar role to the English verb “to be” (am, is, are). We use 이다 to say thi..