If there was no air, people would die.为什么不用were

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If there was no air, people would die.为什么不用were

air是不可数名词
there be 句型后加可数名词单数或为不可数名词时用is/was/has been
后加可数名词复数时用are/were/have been

air是不可数名词

本句意思是如果没有空气人们将会死亡,‘将会’是will,因前面有was,所以用过去式would,
而were和die都是动词不能并用.

这句话如果是出现在正式场合,就是错的,was 要用were 代替。
虚拟语气中be的虚拟只能用were.
虽然有些口语或者非正式场合会出现类似:she treats me as if i was her daughter.或者If it was fine today,we would go for a picnic.的句子,但是考试或者正规书面语还是用were比较好。
希望...

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这句话如果是出现在正式场合,就是错的,was 要用were 代替。
虚拟语气中be的虚拟只能用were.
虽然有些口语或者非正式场合会出现类似:she treats me as if i was her daughter.或者If it was fine today,we would go for a picnic.的句子,但是考试或者正规书面语还是用were比较好。
希望能帮到你!

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