The vowel sounds /ʊ/ and /uː/Contrasting the short and the long back vowel.Related learning areasEnglish PronunciationRelated conceptsContractions 'll and won'tDiphthongsDouble consonants in spelling and soundFinal -s and -es — /s/, /z/, and /ɪz/HomophonesIntonation in wh- questionsQuestionsAll questions in this subjectStart learningStart free practice