DIPHTHONG


Module: 3
Posted by: Lieni Immarie R. Monteron
Sources: 1. Speech and Oral Communication for College Students 
                      by Rafaela H. Diaz
                 2. EFCOM by Milagros Castillo-Espina
                 3. http://www.oup.com/elt/global/products/englishfile

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                  At the end of this topic, the learners are expected to:
·        Enumerate all the diphthongs;
·        Identify the vowels used to form the diphthongs;
·        Distinguish the diphthong in the word.

 
                Some speech sounds contain more than one vowel. A diphthong is a sound composed of two vowels pronounced in close succession with in the limits of a syllable. The vowel sound in the word, fine, is a diphthong for it starts from the /a/ position and glides smoothly to the semi vowel /y/ with in one syllable. Thus a diphthong is a vowel sound that starts from one tongue and lip position and glides upward continuously to a second tongue and lip position. Since the sounds are enunciated so quickly, it is impossible to tell where one ends and the other begins. The two component parts of a diphthong are called its elements. The first element is always stronger than the second; the second is never stressed.

            The diphthongs are /ai/, /au/, and /oi/
Examples:
/ai/                               /oi/                               /au/

Quite                         point                              now
Sight                          boil                               count
Time                           oil                                 brown
Fire                            soil                                proud
Might                         toy                                 sound
buy                             join                                mouth
pie                            spoil                              crown
guide                        noise                             ouch
fly                                                                     out
sigh                                                                 cloud






Guide Questions:
            Determine what diphthong is being used in words.

  1. dine                 11. buy                        21. night
  2. blouse             12. prize                     22. dice
  3. joy                   13. climb                    23. light
  4. fried                14. poise                    24. soy
  5. foul                  15. height                   25. allow
  6. brouse            16. howl
  7. rhyme              17. dye
  8. annoy              18. loud
  9. slouch             19. dice
  10. moist               20. coil

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