ThisisasquirreL变为一般疑问句？ thebabyiscrying变为一般疑问句

• These trousers are theirs.(改为一般疑问句）
• This is a ruler改为一般疑问句
• This is a ruler.改成一般疑问句
• This is a rulre.(改为一般疑问句)

These trousers are theirs.(改为一般疑问句）

把be动词are提前即可

Are these trousers theirs?

This is a ruler改为一般疑问句

This is a ruler 这是个主系表结构，变成一般疑问句，将系动词is 提前就可以了，答案就是：Is this a ruler?

This is a ruler.改成一般疑问句

Is this a ruler?

这是一把尺子吗?

望采纳，谢谢

This is a rulre.(改为一般疑问句)

尺子是ruler,拼错了吧

Is it a ruler?改为一般疑问句,this和that都要改为it