There be 句型被动式如何划分句子成分

下面这个句子，在 there be 之间插入了 are known to：

There are known to be thousands of different species of beetles.

类似的好像还有：

There was said to be a fire in that building last night.

引句中在 there be 之间插入了 was known to。

请问：上面两句中的 thousands of different species of beetles 和 a fire 是什么句子成分？是主语吗？

1. There are known to be thousands of different species of beetles.

= It is known that there are thousands of different species of beetles.

这里的 thousands of different species of beetles 是主语。

2.There was said to be a fire in that building last night.

= It was said that there was a fire in that building last night.

这里的 a fire 是主语。

黎反修 - 英语翻译（已退休）

擅长：数词用法,存在句,英语考试 | 采纳率 32% | 回答于 2014-04-02 14:11

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