to的用法：Dwellings thought by archeologists to have housed religious shrines…

oria

Dwellings thought by archeologists to have housed religious shrines stand along a wide avenue that connects Durrington with Stonehenge.
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整句话的意思能懂，但是这里的'to'是什么成分，有点搞不懂？是（thought by archeologists to)吗？

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jonah_w

& K! w/ V# B& {' L* |by archeologists 是插入语，可以删去。
What do you think is the largest country in the world?
9 j, a/ _4 b1 X5 M7 b6 gby archeologists 这里等同于 do you think

to 是跟前面的thought相连的，
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pan

The author means to say,
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* z3 u- l, u4 c! Z% p) mThe archeologists thought that these dwellings used to (or still, we don't know) house religious shrines. They (these dwellings) now stand along a wide avenue ...
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Pan.

shadowfiend

thought by archeologists to have housed religious shrines整个做dwellings的后置定语，be thought to 相当于be considered to，是被认为的意思，by archeologists是个插入结构，这样分析下来整个句子就很好理解了吧。