For example,

As Jerry and Ming argued about the many possible tile colors for the floor of the new ice-cream parlor, Maria was thinking about whether to paint the walls or wallpaper them.

Is the structure of this sentence correct?

  • Perfectly normal structure. – WS2 Oct 8 '15 at 7:18
  • @ WS2: How about this one "As A was doing sth, B did sth." Any difference between the two structures? – atd Oct 8 '15 at 9:46
  • Like As I was working hard the rest of them sat with their feet up? Fine. – WS2 Oct 8 '15 at 10:20
  • @ WS2: Exactly. Are these two structures the same or they might have semantic nuances? – atd Oct 8 '15 at 10:33

Absolutely correct: substitute 'while' for 'as', and the meaning becomes clearer.

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