Intonation is very important. It can completely change the meaning.

Written text generally does not convey the intonation of spoken language.

Written text generally cannot convey the intonation of spoken language.

They apparently have the same accent as the Tuaregs, with the same emphatic intonations (warm voices). Igwanciyen, the Guanches, the only Berbers not to have been Islamized. To meditate...

He has a very funny intonation.

The intonation is monotonous and sleep-inducing.

He has very funny intonation.

You can tell by her intonation that she lived in a Spanish speaking country when she was young.

Punctuation helps to show grammatical relationships and, at least in English, is also used to indicate intonation.

The Guanches, Igwanciyen, have apparently the same accent as the Tuaregs, with the same emphatic intonations of their warm voices.