出版社：Eesti Rakenduslingvistika Ühing (Estonian Association for Applied Linguistics)
摘要：Word classes have no absolutely distinct established limits. In practical usage it is possible for the words to transcend from one word class to another. There are especially many transitions in Estonian in case of substan- tive and adjective. Substantives can adjectivize and adjectives in their turn substantivize. At the same time the intermediate boundaries between the adjective and adverb,also the substantive and the adverb are not always uniquely determined. There are difficulties in the differentiation of onomatopoetic interjections and some adverbs.
其他摘要：Kirjutises koneldakse raskustest eesti keele sonalikide mairamisel. Kasitlu- se aluse moodustavad“Eesti kirjakeele seletussonaraamatu koostamisel ja toimetami- sel esile kerkinud probleemid.
