be regarded as illegally parked. be regarded as 的用法, parked是什么词性?

be regarded as 被看成是
as 在这里词性可以使 介词或副词， parked 可以看出形容词
在be regarded as illegally parked 结构里， as是副词

例如：we regard him as our leader. 我们把他看成我们的领导。 as词性是介词。
We regard him as very clever. 我们把他看得很聪明。 as就成了副词。

这个as在很多时候其实是to be变来的， consider... to be/ as 一样意思。
基本上 be 后面能跟的结构， 这个结构里换成as也可以跟。

parked是动词的过去分词，停车的意思。illegally parked就是违章停车的意思。

be regarded as 是regard as的被动用法。regard as是“把...视为, 看作”的意思。如：I
regard him as a friend。换成被动语态就是He is regarded as a friend by me.

形容词，illegally副词形容形容词。parked过去分词的形式表被动含义。