Unit7AVisittoaMiddleSchoolPartALet’slearn!Thisistheschoollab,itisonthefirstfloor.Thisistheschoolreadingroom,itisonthesecondfloor.Thisistheteacher'soffice,itisonthethirdfloor.Thisistheclassroomforgrade7,itisonthefourthfloor.Thisistheclassroomforgrade8,itisonthefifthfloor.Thisistheclassroomforgrade9,itisonthesixthfloor.Let’spractice.chemistrylabItison...floor.Thisisthechemistrylab,itisontheseventhfloor.physicslabItison...floor.Thisisthephysicslab,itisontheeighthfloor.sciencelabItison...floor.Thisisthesciencelab,itisontheeighthfloor.重点句型Thisis...Itison...floor这是....它在第...楼。如:Thisistheschoollibrary.Itisonthetenthfloor.这是学校图书馆,它在第十层楼。1,Showyourschooltoyourfriends.2,Introduceyourclassroombuildingtothem.Seeyou!