Is there as much water in this glass as in that one?

这儿的Is there意思是这里有.还原就是
<there is >            <as>     <much water >  (in this glass)   <as>    < in that one>
只是现在你说的句型中的A B 变成了表示地点的<there is >     < in that one>
仔细比对下 ,还是行的.英语要注意分析句子结构,

答案纯手打,手指动一下,