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 ?
问题描述：
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 ?
答
1、This is his case.
These are their cases.
2.this is her hat.
These are their hats.
3.this isn,t my passport.
These aren't our passports.
4.is this your coat
Are these your coats?