Lesson 18 Revision Type: revisionAim of teaching: Three skills:1. Fun story: Focal point: the words in Unit3 : Difficult point: 1. Fun story Teaching method: Communicative approach Teaching tools: tape pictures powerpointProcess of teaching:一、Warm-up Play an English song: I love you. Sing an English song: Father and mother Revise the words in Unit3.Guess the riddle: I’m a little duck. This man is my uncle’s brother, but I never call him uncle. Who i..