Unit 4,Where is my car ,Introduce,in on under,Words,on n,介词，意为“在.上”,常用短语：hold on 继续 on duty 值日,小练习：看图选词填空。 - Where is monkey ? - its _ the desk,A. in B. on,B,Words,chair te(r,名词，意为“椅子” ；复数形式：chairs,常用短语：soft chair 软椅 dining chair 餐椅 office chair 办公椅,小练习：看图先择正确答案 -Whats this ,Its a _,A. chair B. desk,A,Words,desk desk,名词，意为“桌子” 复数形式：desks,常用短语：desk lamp 台灯 writing desk 写字台 help desk 咨询台,小练习：看图选择正确的答案。 -Whats that ,Its a _. A. chair B. desk,B,Expressions,Where is the ruler? 尺子在哪里,句
