Learn how to use modal verbs in English to express probability and possibility. In this grammar lesson, I will teach you when to use must, could and might in the affirmative and when to use can't and might not in the negative. We look at the grammar rules and also some examples of using these modal verbs for when we are sure about something and for when we aren't certain. I then show you the form and structure of them being used in a sentence with an explanation of the meaning. At the end of the English grammar lesson, I give you an exercise using these modal verbs and I give you the answers. More grammar lessons:    • learn English grammar   Listening exercises:    • English listening practice   Vocabulary videos:    • learn English vocabulary   Private English lessons & speaking practice: http://goo.gl/mvUtNa Andrew, Crown Academy of English http://www.crownacademyenglish.com/ null https://twitter.com/Crown_English Je vous explique comment utiliser les verbes modaux en anglais avec ce cours de grammaire anglaise avec des exercices. Photo credits: "Student With Books And Bag" Image courtesy of imagerymajestic | FreeDigitalPhotos.net "Young Woman Getting Bad News By Phone" Image courtesy of David Castillo Dominici | FreeDigitalPhotos.net