http://www.engvid.com "To be" is the most common verb in English. In this basic grammar lesson, I will teach you how to use this verb correctly. You will learn the positive, negative, and question forms of "to be". Even higher-level English students make mistakes with this most basic verb, so even if you think you know this already, you should watch to review. And make sure to take the quiz: http://www.engvid.com/basic-english-grammar-to-be/
آی-ویدئو