Is there a zoo？是极简的there be句型的一般疑问句形式。

there be句型的时态变化形式一般现在时There is 后接单数名词……There are 后接复数名词……一般过去时There was 后接单数名词……There were 后接复数名词……改为一般疑问句只需要把there后面的be动词放到句首。回答根据问题的be动词做变化即可。比如，Yes，there is.或者No，there isn't.