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This study analyzed the pronunciation errors of Korean monophthongs among Chinese learners by measuring and comparing the monophthong pronunciation, particularly the monophthong formants, of five advanced Korean learners in China and five native Korean speakers, using an experimental phonetic method. The results showed that even advanced Korean learners in China made numerous errors in the pronunciation of Korean monophthongs. The most common errors were observed with ㅗ/o/, and errors also occurred frequently with ㅓ/ə/, ㅜ/u/, ㅣ/i/, and ㅐ/ɛ/. ㅏ/a/ and ㅡ/ɯ/ were the least error-prone vowels, while the degree of bias for ㅔ/e/ was also relatively low. By comparing the Chinese speakers' pronunciation of Korean monophthongs with their pronunciation of Chinese monophthongs, it was evident that errors occurred due to the influence of their native language. Therefore, customized corrections should be implemented for Korean monophthongs that are prone to errors. It is essential for teachers to assist Chinese learners in recognizing correct articulation positions and rectifying pronunciation errors, especially when the pronunciation resembles Chinese monophthongs but differs in terms of vowel height and backness.
Liu et al. (Sun,) studied this question.