仁爱七年级下There is a public phone on the street corner.变一般疑问句和否定句

is there a public phone on the street corner
There isn‘t a public phone on the street corner.

一般疑问句：Is there a public phone on the street corner? 把Is提前就可以了。
否定句: there is not a public phone on the street corner. 在is 后面加not 就是否定句。

一般疑问句：Is there a public phone on the street corner?
否定句：There isn't a public phone on the street corner.
there be句型的一般疑问句要把“be”动词提前,否定句要在“be”后加“not”

Is there a public phone on the street corner ?
There is not a public phone on the street corner.