四年级英语下册Unit 1一、单词 (on the)first floor 第一层楼 second floor第二层楼 playground 操场teachers office 教师办公室 library 图书馆art room绘画室 computer room计算机教室music room 音乐教室TV room 电视机房gym 体育馆next to 紧邻;在、近旁 homework 作业 class 班;班级 way方向 forty 四十garden花园二、句型1.-Where is the teachers officeart room?教师办公室绘画教室在哪里? -Its on the firstsecond floor. 它在一楼二楼。2.-How many students are there in your class? 你班里有多少个学生?-Forty-five. 45个。3.-Is thisthat a teachers