it is estimated that,estimated为什么不用原型,这种it is that的主语从句句型,中间

it is estimated that,estimated为什么不用原型,这种it is that的主语从句句型,中间有时是原型,
有时不是,为什么

honlang464 1年前已收到3个回答举报

共回答了19个问题采纳率：94.7% 举报

首先,estimate是动词,前边有be动词,不可能用原型,必须是estimate的被动形式即estimated,其次,这是一个固定搭配,意为“据估计,据预计”.你所说的有原型有被动形式中,那种用原型的比如it is clear that中clear本身是一个形容词,用在be动词之后自然是原型了,所以采用哪种形式关键在于it is和that中间词的词性.

1年前

douxinbiao 幼苗

共回答了110个问题举报

it是物，，后面有is，，变成被动语态，estimate 用过去分词形式！

然后就变成it is estimated。。

跟从句没有关系！！

1年前

要开始吃鱼了幼苗

共回答了3个问题举报

estimate是动词“估计”，放在Be动词之后用被动语态，It's estimated是“据估计.....'此类相似句型句型还有如下
It is reported/known/said that...

1年前

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