中国大学MOOC:"In the following groups of vowels, are mid vowels.";
" /ɜ:/, /e/, /ɔ:/";
举一反三
- 中国大学MOOC:" In the following groups of vowels, are not all front vowels.";
- 中国大学MOOC: In the following vowels, are back vowels.
- In the following groups of vowels, are not all front vowels. A: /ɜ:/, /ɪ/, /e/ B: /ɪ/, /ʌ/, /ʊ/ C: /u:/, /i:/ /ɜ:/ D: /e/, /æ/, /ʌ/
- 中国大学MOOC: Pure vowels can be classified into three categories: front vowels, central vowels and back vowels. The two vowels/ɜː/ and /ə/ are classified into ______ vowels because they are made with the middle part of the tongue being raised.
- 中国大学MOOC: Which of the following are vowels?
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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: Which of the following statements is/are correct about vowels?
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中国大学MOOC: How can you distinguish between front vowels, central vowels, and back vowels?
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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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中国大学MOOC: There are ______ pure vowels and ______ diphthongs in English.