题目内容：

英语!单数句改复数!
1.He is a boy
2.This is his pen
3.It's an English book
4.He has an eraser

优质解答

They are boys.他们是男孩子.
These are their pens.这些是他们的钢笔.
These are English books .这些是英语书.
They have erasers .他们有橡皮擦.
记住下面这些：
he——they
this——these
is、am——are