The impact of intonation is that it helps to stress or convey information beyond what is being said.
intonation is used for several purposes: Marking interrogative and exclamatory sentences.
Topic marking and topicalization, etc. As paralinguistic and extralinguistic information) it serves to give expression to the feelings that accompany the issuance of a particular statement.
The kind of intonation a person has while talking can tell you to an extent how they are feeling.
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