1. This door won't[wóunt] open.

2. This door won't[no accent] open.

3. She won't[wóunt] open the door.
4. She won't[no accent] open the door.
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#1 and #3 indicate the refual(volition) of the subject. Is that right? If we do not stress 'won't,' as in #2 and #4, does each sentence mean a simple future which indicates
'guessing,' 'possibility,' or 'expectation'?

Yes, 1 and 3 indicate firm refusal!

The others simply indicate a future event. Guessing or possibility or expectation are expressed by 'wouldn't' or 'couldn't' or the like.

#1 and #3, which use "won't" with the accent on the second syllable (wóunt), indicate the refusal or volition of the subject. In these sentences, the subject is actively choosing not to open the door.

#2 and #4, which use "won't" without the accent, have a slightly different meaning. In these sentences, "won't" is used as a contraction of "will not." When "won't" is not stressed, it indicates a simple future tense. It can be used to express guessing, possibility, or expectation about the future.

So, in the context of opening a door,
- #1 and #3 imply that the subject is deliberately refusing to open the door.
- #2 and #4 imply that the subject may not open the door in the future, but it is not necessarily a deliberate refusal. It could indicate a possibility, guess, or expectation that the door may remain closed in the future.

Remember, the pronunciation and stress on the word "won't" determine its meaning in these sentences.