Today I want to teach you about a tricky little grammar mistake that I see a lot of students making when using the verbs see, watch, and hear. You'll also learn how the sentence changes when we add the word "that." This was just one small grammar point... but there's a lot more grammar to learn! If you're looking for a detailed course to help you master English grammar, check out my Advanced English Grammar Course. It has 45 lessons with quizzes to help you review and practice - as well as the option to get correction and feedback on your writing.