按要求完成句子（1）THis is my brother 变复数形式（2）THose are my friends 变单

按要求完成句子（1）THis is my brother 变复数形式（2）THose are my friends 变单 句型转换1 This is my ruler.（改为复数形式）2 Are those your sisters?（改为单 英语句型转换This is my watch （变复数） those are Sams brothers （变单数） S 七年级英语（人教）1.This is my watch.(变复数）2.Those are Sam's brothers. This isn't my brother 变复数形式 this is his brother(改成复数形式） that is my sister（改成复数形式） those 1、Those are oranges（变单数形式） 2、your,bill,is,brother（?）（连词成句） 按 1,Those are oranges(变单数形式) 2,your,bill,is,brother(?)(连词成句) 按 This is my sister?怎么变复数形式?代词my用变复数吗? Is this a bus?(改为复数形式） Those are erasers.(改为单复数形式） This is an orange(改为复数句） Those are my friends.改为单数句 Are thes this is my my friend(变复数)