536K views · 12K reactions | Let's take your grammar skills to the next level. I'm going to go over some confusing grammar concepts for intermediate to advanced learners. In this hour-long mega-lesson, I will teach you different parts of grammar ranging from prepositions to modals of lost opportunity to the present perfect continuous. And then I'll challenge you with a quiz at the end of the lesson. Let me know how you do. | Interactive English | Facebook