The lesson includes a video tutorial, a follow-up video or audio and an interactive test.
We know – verbs in English come in many forms. And it drives learners crazy! Sometimes the best way to revise and master them is to compare them and find out when to say “saw” as opposed to “have seen,” or “wrote” as opposed to “have written” or “have been writing.” Such an overview of past simple, present perfect simple and present perfect continuous has helped many of our students to clear up the confusion. Check it out and learn when to use and how to differentiate the tenses.