The three gorges dam has more advantages than disadvantages,

題目：

The three gorges dam has more advantages than disadvantages,which can bring great benefit to the
local people.此處的which修飾三峽還是優點?benefit表示利益時爲可數名詞,此處爲啥沒有加s?

解答：

which指前面整個一句話.
benefit指利益、優勢時也可以當不可數名詞來使用.
不明白的再問喲!請記得採納,多謝!