0all sentences are conditonals, I'll give it a try: 02br 02br 00#1 a hipotetical situation in the present, in other words you are not hungry now so you don't want to eat anything. 02br 02br 00#2 a hipotetical situation in the past, the meaning as above but the sentence relates to the past. In #2 you're talking about the situation that took place in the past, could be yesterday, hours ago etc.
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