There's no difference in meaning between a & b. Note, however, that b is acceptable only in an informal style (where the simple past were is sometimes used instead of the past perfect had been) c is incorrect. The "would have crashed" part in the main clause requires that the condition is counterfactual.
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IvanhrThere's no difference in meaning between a & b. Note, however, that b is acceptable only in an informal style (where the simple past were is sometimes used instead of the past perfect had been) c is incorrect.)Can't we say there is a difference between a & b, this difference being that b suggests the concentrating is still happening?
English 1b3Can't we say there is a difference between a & b, this difference being that b suggests the concentrating is still happening?No. If that were the case, the sentence would read
English 1b3And with your sentence, I believe it suggests not that he definitel