• 2021-04-14
    中国大学MOOC: How can you distinguish between front vowels, central vowels, and back vowels?
  • In terms of which part of the tongue is raised.

    内容

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      According to the shape of the lips, vowels can be classified into close vowels, semi-close vowels, semi-open vowels and open vowels. A: 正确 B: 错误

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      中国大学MOOC: The difference between vowels and consonants lies in the obstruction of the airstream.

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      中国大学MOOC: Among the 20 vowels in RP, there are 12 pure vowels and 8 diphthongs.

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      How many back vowels are there in English? What are they? 6, and they are /u:/, /u/, /ɔ:/, /ɔ/, /ɑ:/ and /ʌ/.

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      中国大学MOOC:"It is common to insert a consonant between two vowels or a vowel between two similar consonants.";