As far as I know, all spoken languages have intonation. Intonation reaches across word boundaries to affect the pronunciation of an entire sentence or larger bit of discourse. It's common across languages, for example, for questions to have rising intonation.
But not all languages have phonemic tone. Phonemic tone occurs within the syllables of single words. Like consonants and vowels, phonemic tones distinguish different words.
Here, different consonants indicate different words: dan, dam, pan, fan, fad.
Here, different vowel sounds indicate different words: dumb, dim, dime, dome, doom.
English doesn't have phonemic tones, but in languages that do, such as Mandarin, words are differentiated by tones as well as by consonants and vowels. The number of tones varies across tone languages. Mandarin has five phonemic tones: high, low, rising, falling, dipping, and neutral/unstressed.
For example, the Mandarin CV sequence "ma" denotes ...
"mother" with high tone,
"hemp" with rising tone,
"horse" with dipping tone,
"scold" with falling tone,
[the sentence-final question particle] with neutral/unstressed tone
Most Indo-European languages don't have phonemic tones, but many Southeast Asian languages and West African languages do.
First tone: a level and higher pitch Second tone: rising, start from a lower pitch and end at a slightly higher pitch Third tone: falling rising, start at a neutral tone then dip to a lower pitch before ending at a higher pitch Fourth tone: falling, start the syllable at a slightly higher than neutral pitch then go quickly and strongly downwards
– Lambie Feb 21 '23 at 01:07