passive voice "subjects"

[Belles1654]

In this passive sentence

1. The inner cities are crowded with a colorful thicket of metal signs.

1: Can "metal signs" be the subject?
2: In a passive construction will the subject of the sentence ever be anywhere other than SVO. (subj. verb. object)?
3: Is it inherent in English that if it's at the beginning of the sentence it's the subject?

Thanks in advance,
Belles;)

[Mister Micawber]

1-- No; the phrase is the object of the preposition 'of'.
2-- No, but a passive sentence has no object; it is SVC (unless it is a question, in which case the order is VSC)
3-- No. It is often a prop-'it' or existential 'it', as in 'It's necessary to close the windows. It's raining.'
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[Belles1654]

Hello Mister Mcawber, I don't know what SVC stands for I know , subject, v erb but what's the "c" stand for?
Thanks in advance,
Belles

[Gkukreti]

MM, What is "C" here?

[Mister Micawber]

complement
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Native English teacher at Mister Micawber's

[Sawsann]

i have 2 prplems the first one is using the passive form while talking and the other one is using the past perfect

[Mister Micawber]

Neither verb form is common in spoken English, so you needn't worry. You can do without them for a while.
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Native English teacher at Mister Micawber's