Mister MicawberTara2In the two sentences below "could" is more confident.1- I can’t be happier!2- I couldn't be happier!No, it's not. 'Can't' is more confident.
Why did the teacher say "couldn't" is 200% sure but "can't" is 100% sure in that sentence?
Tara2 Why did the teacher say "couldn't" is 200% sure but "can't" is 100% sure in that sentence? I don't know. S/he's a poor teacher?
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Tara2Why did the teacher say "couldn't" is 200% sure but "can't" is 100% sure in that sentence?
I don't know. S/he's a poor teacher? S/he speaks another English?
In any case, English teachers should not try to assign a percent to any graded series of terms in English. It is a false premise.