将句子改为各种形式
问题描述：
将句子改为各种形式
That is my pencil case(改为复数形式）
Thoes are our pens.(改为单数形式）
These are apples.(改为单数形式）
She has a basketball.（改为否定句）
答
1.Those are my pencil cases.
2.That is my pen.
3.This is an apple.
4.She doesn't have a basketball.
请注意标点符号和大小写.