When vs. How long

Now you can learn English quickly by yourself at home for free step by step! This video explains the differences between when and how long in questions involving the present perfect and past tenses. It also focuses on the concept of using different verbs to indicate action and status. The video is designed for students and teachers of English as a Second Language (ESL) and can be used in the classroom and for self-study. Excellent for grammar learning, practice and review.