Introduction to irregular verbs | The parts of speech | Grammar | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: Words like "walk" and "look" are regular verbs – they behave in a predictable way. But there's a whole class of words in English, called irregular verbs, that are harder to predict. David, KA's Grammar Fellow, explains. Practice this yourself on Khan Academy right now: Watch the next lesson: Missed the previous lesson?…