Lesson 4What Is It,课前自主预习,课堂互动探究,Unit 1 School and Friends,课前自主预习,eraser,guess,first,Lesson 4What Is It,wall,guessing games,very good,on the wall,又长又细,Lesson 4What Is It,lets play,guessing,Can,guess,Lesson 4What Is It,Is,ruler,write with,turn,Lesson 4What Is It,课堂互动探究,词汇点睛,wall n. 墙,观察 Its on the wall.它在墙上,辨析 on the wall与in the wall 二者都可以表示“在墙上,Lesson 4What Is It,图解,Lesson 4What Is It,活学活用,There is a door _ the wall. A. onB. in C. at D. over,解析】句意：在墙上有一扇门。in the wall意为“在墙上”，强调在墙的里面,B,Less
