Simple, compound, and complex sentences

0 1) Is it true that the subject is never part of a prepositional phrase, or this is just what traditional grammarians claim?02br
00 Eg 1: Neither of these boys (Want/Wants) to try a piece of .... (Accordingly, Once is the only correct choice)02br
00 (in the same way):02br
00 Eg 2: My dog, along with seven puppies, 01i01u01b00Has02b02u02i00 chewed..... (and not "have chewed"). Is this correct?02br
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00 2) Simple, Compound, and Complex sentences02br
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00 1. Lying exposed with its blanket of snow, the ice on the river melts quickly under the warm March sun.02br
00 ( This sentence is described (I found it in the internet) as "Simple sentence"; however, I thought of "Lying exposed with its blanket of snow" as a dependent clause ( Adverbial clause of circumstance). If this is the case, it would be described as "Complex". 02br
00 May be "Lying exposed with its blanket of snow" is an adjectival phrase describing the ice. Ireally don't know.I'm somewhat baffled.Could you help me on this?02br
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00 2. He drives a Rolls-royce and his wife a mercedes.02br
00 The second part is an independent clause with an ellipted verb "his wife (drives) a mercedes". Thus it's a compound sentence.02br
00 A friend of mine told me that I should take it as it is. He told me it's a simple sentence.02br
00 What do you think?02br
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00 3. He wondered how he was progressing? Is this a complex sentence?02br
00 4. Rosen, her mouth stained with berries, came out of the park.02br
00 In class, we treated it as simple sentence.02br
00 * I think this is correct only if "her mouth stained with berries" is an adj phrase. It's not a clause, isn't it?02br
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00 Could you think of any other fuzzy sentences? 0-