English Common Mistakes Lesson 2. Think August 11, 2010 admin In this lesson we focus on differences in meaning when the verb “think” is used in the simple present and present progressive. Level: intermediate. Spread the love: Related English Lessons English Common Mistakes Lesson 4d. WISH and HOPE August 23, 2010 admin English Common Mistakes Lesson 4c. WISH and HOPE August 23, 2010 admin