上课睡觉。因为他教我们英语，我们在英语方面都取得了很大进步。我们都感激他的帮助，而且非常尊重他。

　　【参考范文】　

　　Our English teacher is an energetic and patient person，but he is very strict with us in our study.His teaching is well organized.As a result，every one of us can understand him easily.Besides，to make sure we are interested in his teaching，he sometimes tells jokes to avoid us falling asleep in class.With him teaching us，we have made great progress in English.We appreciate his help and respect him very much.