Definition ALLOMORPH
an allomorph is a variant form of a morpheme.allomorph is a variety of a single morpheme, Just as an allophone is a variation of
a single phoneme
SELECTION OF ALLOMORPHS:
•The past-tense ending, the morpheme {-D pt}. has three phonemic forms.
The choice depends on the preceding sound:
1. After an alveolar stop /t/ or /d/, the allomorph /-ǝd/ takes place as in parted /partǝd/.
2. After a voiceless consonant other than /t/, the allomorph /-t/takes place as in laughed /lӕft/.
3. After a voiced consonant other than /d/, the allomorph /-d/ takes place as in begged /bεgd/.
- This pattern of occurrence is called complementary distribution.
- The occurrence of one or another of them depends on its phonological environment.
•It is really not the morpheme but the allomorph that is free or bound.
•For example the morpheme {louse} has two allomorphs: the free allomorph /laws/ as in the singular noun louse , and the bound allomorph /lawz-/ as in the adjective lousy.
1.Allomorph ADDITIVE:To show some differences in meaning, something is added to a word. For example, the past tense of the English verb partly formed by adding the suffix -ed which can be pronounced as either / t /, / d / or / -ǝd /:ask + ed = / ӕsk / + / t /, liv (e) + ed = / LIV / + / d /, need + ed = / nid / + / -ǝd /.2. Allomorph REPLACIVE:To indicate some differences in meaning, sound used to replace other sounds in words. For example, / Ι / in drinks replaced with / æ / in the past taking a simple signal. It is represented as follows:/ Drænk / = / drΙnk / + / Ι> æ /.
3. SUPPLETIVE Allomorph:To indicate some differences in a sense, there is a complete change in the form of words.As an example:_ Go + which allomorph suppletive of {-D pt} = left;_ Will + which allomorph 3d suppletive of {S} = is;_ Poor + which allomorph suppletive of {er cp} = bad;_ Good + which allomorph -est suppletive of {sp} = best.
4. THE ZERO Allomorph:No change in shape of the word despite some differences in the sense identified. For example, the past tense of pain is formed by adding a zero allomorph of {-D pt} for this word.