There be 句型的特殊疑问句主要有how many和how much做引导词两种情况：
How many+复数名词+are there+介词短语?
How much+不可数名词+is there+介词短语?
There are three bottles of milk on the table.
对其数量提问如下:
---How much milk is there on the table
但是以上how many,how much 仅是对句中数量的提问,如果要对句的中人/物/地点状语提问就要用与之相配的疑问代词和疑问副词来引导(注意：无论原句的主语是单数还是复数,对之提问时一般都用be的单数形式,回答时却要根据实际情况来决定)
如对"three bottles of milk"物提问
what is on the table?答案是什么 没太听懂你可以理解为时对马路上东西的提问， what is on the roads