This is your case.变复数……This is your case.It is a green dress.My blouse is new.I'm a teacher.This is a black and grey shirt.变复数要正确的急+++分

Is your case?变复数句 This is your case.变复数……This is your case.It is a green dress.My blouse is new.I'm a teacher.This is a black and grey shirt.变复数要正确的急+++分 Is this your pencil case中文 变复数形式.1、This is his case.2.this is her hat.3.this isn,t my passport.4.is this your coat ? 变复数句1.This is my booy2.Is that his uncle3.Is she your friend4.Yes,it is5.This is my pencil case is this your case,is this case yous这两种语法有没有错误 Exuse me!Is this your pencil case?改为复数形式 is this a pen ___ your pencil case This is a new pen.( ) it in your pencil case Is this your watch in the lost and found case?怎么翻译?特别是case is this your ball?(变复数） Ok,and this is my book and this is your pencil case ,Jane. Is this your backpack?变复数要怎么变啊! 连词成句 notebook your this is in lost found ang case theoh，no。搞错了应该是notebook your this is in lost found and case the Is this your pencil?Yes ,it is.变复数 OK.and this is my book.And thr is your pencil case Jane This is his pencil case. is this your case 语法错误吗?为什么我学新概念一的时候 有一句话 这是你的箱子吗？文章中的翻译is this case yours?我不解这种用法？用Is this your case