Where there is a will,there is a way.有誌者,事竟成.
There is a way是主句,where there is a will是對於There做解釋,算是There同位語從句；there is a will是對where作解釋,算是where的同位語從句
所以這句名言疊加了兩重的同位語從句
而妳給的例句並沒有第壹個There,可以對該句進行重組
Where there is enough water,the plan lies.
這裏where只能解釋為修飾lies的方位副詞,where there is enough water整句就算是狀語從句；而there is enough water是對where的解釋,算是where的同位語
所以例句算是壹個狀語從句疊加了壹個同位語從句