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  Exercises in Phonology


Answers are given at the bottom of the page.

Allophones:

#1.  Consider the following words of English with respect to how the sound represented by t is pronounced.  Specify for each column what the phonetic character of the allophone is.  Describe the allophones of /t/ in English and specify their distribution.
A B C D
tougher standing matter petunia
talker still data potato
teller story petal return

#2.  Fijian is an example of a language with prenasalized stops in its phonological inventory. (The prenasalized stop [nd] consists of a nasal pronounced immediately before the stop, with which it forms a single sound unit.)  Consider the following Fijian words as they are pronounced in fast speech:
vindi 'to spring up' dina 'true'
kenda 'we' dalo 'taro plant'
tiko 'to stay' vundi 'plantain banana'
tutu 'grandfather' manda 'first'
viti 'Fiji' tina 'mother'
dovu 'sugarcane' mata 'eye'
dondo 'to stretch out one's hand' mokiti 'round'
vevendu (a type of plant)

On the basis of these data, determine whether in Fijian [d], [nd], and [t] are allophones of a single phoneme or are two or three distinct phonemes.  If you find that two of them (or all of them) are allophones of a single phoneme, state the rule that describes the distribution of each allophone.  If they are all different phonemes, justify your answer.

Note: In Fijian all syllables must end in a vowel.

Complementary distribution

#1.  Kongo Obstruents

In Southern Kongo, we find [t, s, z] in complementary distribution with [, , ], respectively:
1. tobola 'to bore a hole' 9. nselele 'termite'
2. ina 'to cut' 10. loloni 'to wash'
3. kesoka 'to be cut' 11. zevo 'then'
4. nkoi 'lion' 12. aimola 'alms'
5. zenga 'to cut' 13. nzwetu 'our hourse'
6. ima 'to stretch' 14. kunezulu 'to heaven'
7. kasu 'emaciation' 15. tanu 'five'
8. iba 'banana'

a)  State the distribution of these sounds.  Where do [t, s, z] occur?  Where do [, , ] occur?

b)  Which sounds should be taken as representing the basic underlying phonemes, and which as representing their surface variants?  State your reasons.

basic:

nonbasic:

c)  State the rule that derives the surface variants from the basic phonemes you have proposed.

#2.  Ganda Liquids

[r] and [l] are in complementary distribution in one variety of Ganda.  State the conditions under which each appears.
1. kola 'do' 11. wulira 'hear'
2. lwana 'fight' 12. beera 'help'
3. buulira 'tell' 13. jjukira 'remember'
4. lya 'eat' 14. eryato 'canoe'
5. luula 'sit' 15. omuliro 'fire'
6. omugole 'bride' 16. effirimbi 'whistle'
7. lumonde 'sweet potato' 17. emmeeri 'ship'
8. eddwaliro 'hospital' 18. eraddu 'lightning'
9. oluganda 'Ganda language' 19. wawaabira 'accuse'
10. olulimi 'tongue' 20. lagira 'command'

Phonological Rules

Phonological rules are usually written in the following form:

A -> B / C __ D

In such rules, A is said to be the affected segment, B is the change, and C and D constitute the context  or environment.  CAD constittutes the structural description (SD) of the rule, and CBD constitutes the structural change (SC).

Some conventional symbols:

Ø  the null set, e.g. Ø -> B / C __ D  "insert B between C and D."
                     A -> Ø / C __ D   "delete A between C and D."

#   word boundary

+   morpheme boundary

C   [-syllabic] segment  (consonant)

V   [+syllabic] segment  (vowel)

V´  stressed vowel

C0  zero or more [-syllabic] segments

:   lengthened vowel

o  syllable (boundary)

#1.  State what the following rules do in plain English:

N.B. [-syl] = consonant, [+syl] = vowel

a.  [+nas] -> Ø / [+syl] __ #

b.   [+syl ] -> [-syl] / __ [+syl]
     [+high]

c.  Ø -> [+syl ] / [+strident]+ __ [-sonorant]
          [+high]  [+coronal]      [+coronal]
          [-back ]

d. [-sonorant  ] -> [-back] / __ [+syl ]
    [-continuant]                 [-back ]
    [-labial     ]                 [+high]

e.  V -> [+stress] / __ C0 V C0 V C0 #

#2.  Restate the following rules in formal notation:

a.  The glide is insterted between a high front vowel and any following vowel.

b.  A voiced consonant becomes nasal after a nasal stop.

c.  Obstruents are devoiced word-finally or when they precede voiceless obstruents.

d.  A stressed vowel is lengthened if the following vowel is unstressed.

e.  Voiced stops become the corresponding fricatives intervocalically.

Answers

Allophones

#1.
A B C D
[th] [t] [D] [th]

Distribution:

a)  The aspirated [th] occurs word initially and word internally, introducing a stressed syllable.
     i.e. [t] -> [+SG] / #__
         [t] -> [+SG] / o#__

b)  [t] occurs folllowing a word or syllable initial constant i.e. [t] #C__

c)  [t] becomes the flap [D] when it occurs between two vowels, i.e. [t] -> [D] / V__V

#2.

[d] is found word initially, i.e. [d] / #__

[nd] occurs syllable initially in the last syllable of the word, i.e. [nd] / o__V#

[t] is found word initially and syllable initially in the last syllable.

Therefore, [d] and [nd] are allophones, but [t] is a different phoneme, since it occurs in the same environments as [d] and [nd].

Rule: [d] -> [nd] / o__V#

Complementary distribution

#1. Kongo Obstruents

1.  [t], [s], [z] occur before the vowels [o], [u], [e]; [], [], [] occur before [i]

2.  t, s, z are the underlying phonemes because they occur in more environments.

3.  Rule: [t], [s], [z] -> [-anterior] / V [+high ]
                                         [+tense]

#2. Ganda Liquids

[l] appears word initially and syllable initially following the vowels /a/o/u/

[r] appears syllable initially following the vowels /i/e/

Rule: [l] -> [r] /    V    o__
                [+tense ]
                [-back  ]

Writing Phonological Rules

#1.

a)  A nasal disappears following a word-final vowel.

b)  A high vowel becomes a consonant preceding a following vowel.

c)  [i][I] are introduced morpheme initially between a fricative and a coronal consonant.

d)  [t][d] become the corresponding affricates [tS][dZ] preceding [i][I]

e)  A vowel becomes stressed in the antepenultimate position.

#2.

a)  The glide [j] is inserted between a high front vowel and any following vowel.

Rule: Ø -> j /    V   __ V
              [+high ]
              [+front]

b)  A voiced consonant becomes nasal after a nasal stop.

Rule:    C   -> [+nasal] /        C     __
     [+voice]              [-continuant]
                            [+nasal     ]

c)  Abstruents are devoiced word-finally or when they precede voiceless obstruents.

Rule:      C     -> [-voice] / __ #
      [-sonorant]             / __     C
                                   [-voice   ]
                                   [-sonorant]

d)  A stressed vowel is lengthened if the following vowel is unstressed.

Rule:     V    -> [+:] / __    V
      [+stress]             [-stress]

e)  Voiced stops become the corresponding fricatives intervocalicially.

Rule:     C        -> [+continuant] / V __ V
      [+voice     ]
      [-continuant]

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