There is an apple in my bag变为一般疑问句和否定句,做两种回答

问题描述:

There is an apple in my bag变为一般疑问句和否定句,做两种回答

Is there an apple in your bag?
Yes,there is.( 肯定回答)
No,there isn't( 否定回答)
There isn't an apple in my bag.( isn't= is not 否定句)