这个句子的主干是：I looked upon sth. as sth.  结构并不复杂。

网友的意思似乎是，对这个词组的结构有点晕。我给这位网友总结、归纳一下此类表达。关于怎样划分成分是次要的，需要记住这些说法才是主要的。同时，对划分成分，我也谈一下自己的看法。分析句子结构，要学会去伪存真，去粗取精，找出主干和精华，不要被繁杂的词语蒙蔽眼睛。

英语这样的表达或结构有跟多，我们拿regard...as...为例。在regard ... as ...结构中，as用作介词，意为“当作；作为；是”。一般语法书都把as介词短语看作宾语补足语。as后除了接名词代词外，还可接形容词和动名词，有的动词还可以接as从句。

最常见的这类表达是“观点类”用法。该类动词表示“认为，认可，承认，确认，当作，看作，视为，理解为”等含义。为了理解方便，我们用him作宾语。

“观点类”结构归纳：

regard him as

consider him as

identify him as

view him as

recognize him as

confirm him as

think of him as

look on him as

look upon him as

esteem him as

reckon him as

acknowledge him as

know him as

conceive of him as

see him as

treat him as

count him as

value him as

accept him as

take him as

label him as

perceive him as

fancy him as

imagine him as

understand him as

除了把as介词短语看作宾语补足语外，还有一种观点，就是把as介词短语看作方式状语。我也比较倾向这个观点。例如：

I treat him as a guest of mine. 我把他当作客人。

这句话实际上是说：“我以客人的方式对待他”。那么，as短语的作用就是“以何种方式看待某人，对待某人等”，就是说，as短语是针对谓语动词treat而言的，并非针对宾语而言，所以看作方式状语比宾补更好。这里的as意为“以...身份，作为...方式”。

我认为：“宾补”的观点重在强调动作的结果；“方式状语”的观点重在强调动作的方式。