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题目
这是什么从句?that做什么成分?
It has been estimated that if the bridge were packed with cars,it would still only be carrying a third of its total capacity.

提问时间:2021-03-24

答案
that 引导的是主语从句,因为太长所以放在了后面,然后用it充当形式主语.正常语序应该是:
that if the bridge were packed with cars,it would still only be carrying a third of its total capacity has been estimated.
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