While both are possible, the probability is that they had their notes open in front of them for a long time but they were not studying
Q : I know that 'open' is an adjective in the sentence above. But I wonder if 'open' could be an intransitive verb.
If it is impossible, I want to know the reason. Could you please answer the question?
If "open" was a verb then "had" would appear to be causative. The idea of "causing" one's notes to open seems odd, suggesting some unusual agency other than the normal method of opening them with one's hands. Also, the verbal interpretation conflicts with "for a long time", which we assume to be referring to a persistent state, not a discrete action.
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If "open" was a verb then "had" would appear to be causative. The idea of "causing" one's notes to open seems odd, suggesting some unusual agency other than the normal method of opening them with one's hands. Also, the verbal interpretation conflicts with "for a long time", which we assume to be referring to a persistent state, not a discrete action.