把下面四个句子班委否定句和疑问句：This is my backpack.That is her dictionary.It’s his eraser.
问题描述：
把下面四个句子班委否定句和疑问句：This is my backpack.That is her dictionary.It’s his eraser.
答
否定句就是在be动词is后加not；疑问句就是将be动词is提到句首.This is not my backpack.Is this my backpack?This is not her dictionary.Is this her dictionary?It's not his eraser.Is it his eraser?当然is not...