英语语法问题it has been estimated that= what has been estimated is
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英语语法问题
it has been estimated that= what has been estimated is that=as has been estimated ,
为什么可以这么替换,其中的语法是什么
it has been estimated that= what has been estimated is that=as has been estimated ,
为什么可以这么替换,其中的语法是什么
it has been estimated that...
it 是形式主语,that 从句是真正主语.that 从句可以移到句子开头,变为主语从句 That ...has been estimated.
what has been estimated is that...
其中的关系是what = that.把what 和 is 去掉,也能还原成 That...has been estimated.
as has been estimated,【estimated 后面有逗号隔开】
as 作关系代词,引导非限制性定语从句,先行词是整个主句,即逗号后面的句子.
例子:
It has been estimated that around a third of China's carbon emissions in 2005 were due to manufacturing exported goods.(据估计,2005年中国大约有1/3的碳排放是由于生产出口产品造成的.)
= What has been estimated is that around a third of China's carbon emissions in 2005 were due to manufacturing exported goods.
= As has been estimated,around a third of China's carbon emissions in 2005 were due to manufacturing exported goods.
= That around a third of China's carbon emissions in 2005 were due to manufacturing exported goods has been estimated.(这个结构不平衡)
it 是形式主语,that 从句是真正主语.that 从句可以移到句子开头,变为主语从句 That ...has been estimated.
what has been estimated is that...
其中的关系是what = that.把what 和 is 去掉,也能还原成 That...has been estimated.
as has been estimated,【estimated 后面有逗号隔开】
as 作关系代词,引导非限制性定语从句,先行词是整个主句,即逗号后面的句子.
例子:
It has been estimated that around a third of China's carbon emissions in 2005 were due to manufacturing exported goods.(据估计,2005年中国大约有1/3的碳排放是由于生产出口产品造成的.)
= What has been estimated is that around a third of China's carbon emissions in 2005 were due to manufacturing exported goods.
= As has been estimated,around a third of China's carbon emissions in 2005 were due to manufacturing exported goods.
= That around a third of China's carbon emissions in 2005 were due to manufacturing exported goods has been estimated.(这个结构不平衡)
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