Sorry for the delay in replying - got literally cut off from the internet when the Virgin cable got damaged!
Regarding Q1,
Sampson

on pg 177 in chapter 10 ('Evidence against the grammatical/ungrammatical distinction') of his
Empirical Linguistics opines that "to suggest that the construction is not just very unusual but actually impossible in English is merely a challenge to think of a plausible context for it...There would be nothing even slighty strange, in a discussion of foreign languages, in saying
Norwegians put the article after the noun, in their language they they say things like bread the is on table the - an utterance which contans two examples of Culy's 'impossible construction'. Talking about foreign languages is one valid use of the English language, among countless others."
Regarding Q2,
Trask in the entry for 'dangling participle' in his
Penguin Dictionary of English Grammar has this to say: "A
PARTICIPLE which is not grammatically linked to the rest of its sentence, or at least not in an orderly manner. For example, in *
Driving down the road, a deer leapt out in front of me, the participial phrase
driving down the road is dangling: if anything it appears to be linked (wrongly) to
a deer. In *
Having said that, there's another solution, the participial phrase
having said that is linked to nothing at all. Though they are not rare in speech, dangling participles are regarded as inappropiate in formal writing, and they should be avoided; they violate the
SUBJECT-ATTACHMENT RULE". (="A rule of standard English by which the absent
SUBJECT of a
NON-FINITE phrase must be interpreted as identical to the subject of the higher clause containing it. Violation of this rule produces a
DANGLING PARTICIPLE").
The "problem" it would seem to me (and thus the puzzle I drew from Trask, and posited here) is that Trask is "obviously" talking about sentence-level, limited-context rules, but has (perhaps deliberately and somewhat slyly) picked an example that smacks very much of more extended (and as he implies, spoken) discourse...so his book might be more interesting and instructive than some.
Anyway, thanks for the replies, and I'll perhaps post more short questions and puzzles (conundrums?) like this as and when I spot 'em!
