Warm-up or lead in设计一:复习导入师用课件出示四年级上册第一单元第四页的“Let’s do”部分:“Open the door.Turn on the light.Sweep the floor.Clean the window.Put up the picture.Clean the board.”先让同学们按原来的节奏加动作说一遍,然后师在黑板上板书:“It’s time to…”师打上节奏说句子。说的时候将整个句子分成 Warm-up or lead in Design One: Review Import Instructor Present fourth-grade volume one on the fourth page of the fourth page of the “Let’s do” section: “Open the door.Turn on the light.Sweep the floor.Clean the window.Put up the picture.Clean the board. ”Let the students start by adding the original rhythm again, and then teacher on the blackboard board: “ It’s time to ... ”teacher rhythm that sentence. When the whole sentence is divided into