Question

IT DOES NOT matter if we fail sentences in to affirmative ​

Answer 1

The affirmative sentence for “ It doesn't matter” is:

It does matter.

If someone lightly dismisses a serious issue as of no consequence, which annoys you, and infuriates you, you would assert rather emphatically:

It does matter.

This sentence is normally treated as 'emphatic' sentence, because ‘does' stresses the certainty of the statement.

‘It matters' as the affirmative sentence lacks the emphasis, and so 'It does matter' can be interpreted as the affirmative sentence making an emphatic assertion.