It is acknowledged that teachers are compelled to do plenty of preparations before the class.It plays a vital role in improving teaching quality.Accordingly,different lesson plans will bring different effect of class.The teachers make the lesson plan in order to handle with the teaching problems appeared in the class.Every teacher focuses on the interaction and communication with students.Thus,during the class,they may change the order of steps of lesson plan.The author had a precious opportunity to have English open classes in Swansea University,upper-intermediate and pre-intermediate lesson,and observed two professors to teach English.Compared with two professors' class,the author learned the way to enhance students' learning experience.