2012- 12- 24
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#128
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أكـاديـمـي نــشـط
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رد: منـاقــشه النـــحو والصــــرف للإختـــــــــبآر :
Internal change is a process that substitutes one non-morphemic segment for another.
Sing (present) sang (past)
Sink (present) sank (past)
Drive (present) drove (past)
Foot (singular) feet (plural)
Goose ( singular) geese (plural)
Verbs such as sing, sink, and drive form their past tense by changing the vowel (e.g., from i to a in the first two examples). The term ABLAUT is often used for vowel alternation that mark grammatical contrast in this way. Ablaut can be distinguished from UMLAUT, which involves the fronting of a vowel under the influence of a front vowel in the following syllable. Historically, this is what is responsible for the use of feet and geese as plural forms of foot and goose.
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