Which explanation makes more sense? What's the difference between these two sentences? A)I tugged at the door but it didn't open. B)I tugged at the door but it wouldn't open. 1) The first one is about trying to open the door but finally not getting any result, but the second one says you were trying to do that but it wouldn't open(means for a period in the past that you are talking about it didn't open but maybe after that it did) 2) The difference between them is so subtle as to be almost non-existent. Didn't usually just conveys the simple fact in past tense, but wouldn't sort of implies that there was a problem opening the door. 3) The difference between these two sentences is the time they are happening in. The first sentence denotes to the past while the second one occurs in the present time. You couldn't open the door in the first sentence. Yet, in the second sentence, you are saying that you can't open it.