why does the lake smell terrible?because large quantities of water ——A.have polluted B.is being polluted C.has been polluted D.have been polluted这里主语为什么是quantities?不应该是water吗?到底应该选哪个?

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whydoesthelakesmellterrible?becauselargequantitiesofwater——A.havepollutedB.isbeingpollutedC.hasbeenp

why does the lake smell terrible?because large quantities of water ——A.have polluted B.is being polluted C.has been polluted D.have been polluted这里主语为什么是quantities?不应该是water吗?到底应该选哪个?
why does the lake smell terrible?because large quantities of water ——
A.have polluted B.is being polluted C.has been polluted D.have been polluted
这里主语为什么是quantities?不应该是water吗?到底应该选哪个?

why does the lake smell terrible?because large quantities of water ——A.have polluted B.is being polluted C.has been polluted D.have been polluted这里主语为什么是quantities?不应该是water吗?到底应该选哪个?
Why does the lake smell terrible? Because large quantities of water has been polluted.为什么水会这么难闻?因为大量的水被污染了.
首先水被污染,是被动排除A,然后large quantities修饰的是water,即water是真正的主语,单数,所以排除D.水已经被污染了,所以用现在完成时.选C.
注意large quantities of都是修饰成分,后面的才是真正的主语.你不要把 large quantities 当作主语.一般of 后面的是主语.

说C是正确的那个错了孩子，应该是D，答案是那么给的

谢什么啊，错了拉啦。应该是D!害我都错了！真是的

这道题选D，当主语是a quantity of 时，谓语受of后面的单复数影响，of后面是复数，就用复数；如果单数，就用单数；但是当主语是 quantities of 时，谓语总是用复数。例如：
With more forests being destroyed, a large quantity of good earth is being washed away each year. ...

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这道题选D，当主语是a quantity of 时，谓语受of后面的单复数影响，of后面是复数，就用复数；如果单数，就用单数；但是当主语是 quantities of 时，谓语总是用复数。例如：
With more forests being destroyed, a large quantity of good earth is being washed away each year. = With more forests being destroyed, quantities of good earth are being washed away each year.

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