总  结

Major class features can specify segments across the consonant-vowel boundary. Classification of segments by features is the basis on which variations of sounds can be analyzed. Do you still remember what we have learned?

Now, close your eyes. Review this information in your mind, or write them down. I believe they are very beneficial for you! 　

反  思

1．What is phonetics features?

2．What is it called if a class of sounds share a phonetic feature or features?