Tone
Does a word's meaning change when your voice goes higher or lower?
Znaczenie
In some languages, a word's meaning depends on how the voice rises, falls, or stays level on its syllables. These pitch patterns, called tones, can distinguish words or mark a grammatical difference. Languages may have many such patterns, only a few, or no tone system at all. Tone concerns pitch patterns carried by words or syllables; Stress and intonation concerns which parts stand out and the melody of a whole sentence.
Jak to rozpoznać
Listen for words or forms with the same consonants and vowels whose meanings differ because of a regular high, low, rising, or falling pitch pattern.
W języku nauki
English does not use tone to distinguish words or grammatical forms. Pitch helps express questions, emphasis, and attitude through intonation, the melody of a sentence. A different melody can turn You're ready into a check, but it does not give ready a new word meaning.
You're ready.
With a usual falling melody, this is a statement; ready has no fixed word tone.
You're ready?
A rising melody can make the same words a question asking for confirmation.
Learners whose language gives words fixed tones may carry those patterns into English. This can make statements sound like questions or change the intended emphasis.