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.

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？

jonah_w

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2 P7 \$ P: I- `+ L" Fby archeologists 是插入语，可以删去。
. T0 |: e3 i" U. k. S3 ~4 E0 Q0 l; hWhat do you think is the largest country in the world?
) v" n: J# }" s5 I$ W5 p  x& i+ Hby archeologists 这里等同于 do you think

, U7 }7 J- [) Rto 是跟前面的thought相连的，
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pan

The author means to say,

The 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 ...

6 T+ V* E1 H$ Q2 T3 j: bPan.

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。