来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/09/21 03:37:14
把下面的句子变成复数形式
(1)This is a book.
(2)That is a yellow pencil.
(3)He is a good boy.
(4)She is playing on the computer.
these are books.
those are yellow pencils
they are good boys
they are playing on the computer(s).