DIFFICULTIES OF ASSIMILATION OF MORPHOLOGICAL PHENOMENA AND THEIR ACCOUNT IN TEACHING RUSSIAN WORD FORMATION AND MORPHEMICS

The article analyzes alternations in the suffix method of word formation, alternation at the boundaries of the root (or base) and suffix in morphology. Changes are observed in the addition of the suffix to the base, causing the so-called regressive assimilation on various grounds. The alternations caused by the modern laws of the sound system and orthoepic norms are considered, called live,phonetic and positional