estimate用法

It estimated that the floods this summer have resulted into a total economic loss of more than 61.8 billion yuan ($8.8 billion).今天在中国日报APP上看到的一个句子。

一，请问开头是不是应该改成It was estimated that或者People(Authority) estimated that.

二，请问estimate可以像report、believe、think……一样改成The floods was estimated to have resulted……吗？

如果前文提到国家应急管理部采取措施应对当前的水灾，紧接着是你的句子，那么it就是人称代词，指代这个部分，句子为主动语态。这就没有问题。如果it不是指示代词，而是形式主语，那么这就是错句了。你需要重读原文，确定it是人称代词还是形式主语。

estimate属于提升动词raising verb, 即 It is estimated that 从句，可以把that从句的主语提升到主句作主语，that从句的谓语动词改为不定式结构。例如下面COCA语料库例句：

Additionally, Lemonick notes that the sea level is estimated to have raised a total of three feet by the year 2100.

...because mean global temperature is estimated to have cooled from 1880 to 1910, then warmed to 1940,...

曹荣禄 -

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