Фонемна структура кореневої морфеми в давньо-, середньо- та новоанглійський період

The interchange between [e] and [o] was called qualitative (якісне чергування), Rus. бреду – брод the interchange between short and long vowels E.g. Lat. sedo – sēdi (to sit - sat) or one of them with the zero position was considered quantitative (кількісне чергування) Rus. беру – сбор – брал

• The interchange between [e] and [o] was called qualitative (якісне чергування), Rus. бреду – брод the interchange between short and long vowels E.g. Lat. sedo – sēdi (to sit - sat) or one of them with the zero position was considered quantitative (кількісне чергування) Rus. беру – сбор – брал
• Alternation made it possible to express different aspects of actions. It is supposed (on the basis of comparative analysis of IE languages) that PIE did not have tenses but only aspects, on the basis of which different tenses developed later.