A. of their sales of a year earlier being so bad as that
B. of their sales a year earlier having been as bad as because
C. of their sales a year earlier being as bad as because
D. their sales a year earlier had been so bad as because
E. their sales of a year earlier were as bad as that
Ron,
You eliminated A,B and C in the above SC because
You can interpret B as saying Noun Verbing ----------------------(1)(a)
you cannot write "proof of ... fields ... posing". this kind of construction is just wrong.
sorry.
this is going to annoy a lot of people, because this sort of construction is bread and butter in spoken language,
BUT:
if the focus of the construction is the ACTION, then you must use the POSSESSIVE form for the noun/pronoun preceding the "-ing" participle. since that's fatally awkward to say in words, i'll provide an example:
everyone laughed at me accidentally walking into the girls' bathroom --> WRONG. sorry. this sentence would actually mean that everyone laughed at me as they were walking into the girls' bathroom.
everyone laughed at my accidentally walking into the girls' bathroom --> CORRECT, because it's the action (my walking into the bathroom, not really me) that they're laughing at.
But you can also interpret B as saying pronoun (their ) sales Verbing which seems to be rights since its the sales that were high . ------------------------------------(2)
i am confused as to whats the action that we should concentrate on
its their "noun Verbing "
or Noun's verbing
If we concentrate on the Nouns verbing then B is wrong but if we concentrate on their (Possessive Pronoun ) Noun Verbing then B seems to be right