True, Monophthongs contain only one vowel sound, Diphthongs are produced by moving from one vowel sound to another., The sound /ɪ/ can be heard in the word “ship”., The sound /aɪ/ is a diphthong., Vowel sounds can change the meaning of a word, The sound /æ/ is found in the word “cat, English has more vowel sounds than vowel letters., The sound /ʊ/ is found in the word “book, Long and short vowels can sometimes distinguish two different words., 14. The position of the tongue and lips can affect the quality of a vowel sound, False, The sound /iː/ is a short vowel sound., The sound /eɪ/ is a monophthong., The words “ship” and “sheep” contain the same vowel sound, The sound /əʊ/ is a monophthong., All English vowel sounds are represented by only five vowel letters: A, E, I, O, U., Diphthongs contain only one stable vowel sound, Vowel sounds are produced when the airflow is completely blocked in the mouth., The words “ship” and “sheep” have the same vowel sou, The sound /ɪ/ is a long vowel sound.

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