Unsure about my take on this sentence...

[Noego]

Walking as if each step were painful1, she slowly pushed open the glass door and hobbled down the nearest aisle2.
1: Dependant clause (what kind of dependant clause??) I'm kind of confused as to the nature of this subordinate clause...
2: Main clause
Walking: past progressive? (which tense is?)
As if: describes how a situation seems to be
Each: determiner
Step: noun
Were: linking verb (copula)
Painful: predicator adjective (predicate adjective)
She: personal pronoun, 3rd person
Slowly: adverb
Pushed: V. Simple past, transitive
(pushed open): Verbal phrase’
The: (adjective, determinant, definite article)
Glass door: compound noun or:
Glass: adjective noun (is there a term for nouns used as adjectives?)
Door: noun
And: conjunction, links main clause with verbal phrase (compound verb: pushed + hobbled). Not too sure as to how to define the use of the conjunction here. I would assume "and" here links the main clause with the verbal phrase hobbled down the nearest aisle.
Hobbled down: verbal phrase
The: definite article
Nearest: adj.
Aisle: noun

[Casiopea]

Originally Posted by Noego

1. Walking

You've two choices with Walking. It's either a present participle or a gerund.

If participle, its function is adjectival and it heads a clause that modifies a (pro)noun somewhere in the sentence. Does Walking fit that definition?

If gerund, its function is nominal, which means it has one of three functions in the sentence: (i) it's a subject and agrees in person and number with a verb, (ii) it's an the object of a verb or (iii) it's the object of a preposition. Does Walking fill one of those structural positions?

Originally Posted by Noego

As if: describes how a situation seems to be

OK, but what's its form and what's its function? Take a look at where it's sitting in the sentence. Does it belong to a major class? If not, does it modify anything? If not, does it connect anything?

Originally Posted by Noego

Glass: adjective noun (is there a term for nouns used as adjectives?)

There's the term substantive, meaning substitutes for, but the term adjective is fine.

Originally Posted by Noego

And: conjunction, links main clause with verbal phrase (compound verb: pushed + hobbled). Not too sure as to how to define the use of the conjunction here. I would assume "and" here links the main clause with the verbal phrase hobbled down the nearest aisle.

It links two verb phrases (VPs), like this,

[VP slowly pushed opened the glass door] and [VP hobbled down the nearest aisle]

All the best.

[Noego]

Thank you Casiope!

This really helps.