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        1. Gradation or Ablaut

The alternation of various vowel sounds in the same root (or suffix, etc) is termed ablaut or vowel gradation. It is typical of all IE languages, though not many of them have used ablaut as systematically for grammatical purposes as the Gc languages, e.g.

R везу/ воз; гремит/ гром

L tego (сover)/ to

E sing /sang/sung

This kind of ablaut is qualitative, as the vowels differ in quality. Alternation of short and long vowels and alternation with a zero (i.e. lack of a vowel) represents quantitative ablaut.

ē, e L lēgi (elected) lego (elect)

e- o-zero R.беру, сбор, брал

The Gc languages employed both types of ablaut – qualitative and quantitative – and their combinations.

The origin of gradation has been a matter for discussion for about a century.

What these alternations are due to is not easy to determine. Most scientists believe that stress played an important part in it. The main type of gradation in IE languages is the alternation e (o) zero (absence of a vowel). Three variants are due to stress conditions: full stress brings about the high degree, viz. o, weakened stress – the medium degree, viz. e, and unstressed position- zero, e.g. R. стол- стелить- стлать.

The main type of gradation in Germanic languages is i (a) zero, as IE e finds its counterpart in Gc i, and IE short o appears as short a in Gc.

The system of gradation in Gc languages is best seen in the so-called strong verbs of the Gothic language. In the Gothic Bible of the 4-th century, the system of gradation appears in a very clear shape, whereas in the earliest documents of other Germanic languages, including English, it has undergone such changes that its original laws are hard to discover. A strong verb of the second class may serve as an example of ablaut.

Infinitive

Past singular

Past Plural

Past Participle

kiusan(choose)

kaus

kusum

kusans

If we extract the common element u from all four forms, we get the very germ of gradation as i (a) zero.

In Early Common Germanic the vowel system contained short vowels a, e, i, u; long vowels ō, ē, ī, ū; so there was neither a short o, nor a long ā, which later appeared from different sources.

After numerous changes, the vowel system in Late Germanic contained the following sounds:

Short vowels: i, e, a, u, o

Long vowels: ī, ē, ō, ū, ā

Ei, ai, eu, au, iu traditionally referred to diphthongs nowadays are interpreted as sequences of two independent monophthongs by many scholars.

        1. Unstressed Vowels

Unstressed vowels underwent a gradual process of shortening and slurring until many of them were lost altogether. This process has continued with different intensity in different Germanic languages during all the investigated part of their history. Its results are evident even in the oldest Germanic records. Cf. R бе΄ри, G. ph΄ere – Gt bair, OE ΄ber, E ΄bear (the ending is lost)