English phonetic alphabet [? 】、【a】、【？ Pronunciation differences]

Alas, I didn't even choose the best answer. Deleting content is a bit impulsive.

/? /

The pronunciation of this sound has several key points: ① the mouth is open, and both sides of the tongue can't touch the back teeth; ② The tongue surface also has a sense of arching; (3) It is homophone with "ah" in Chinese Pinyin, and the international phonetic symbol means /a/. In modern RP, the pronunciation of this sound will be very short, and/? /,there is a short and powerful feeling.

/? /If it is the same as "ah" in Chinese, how can it be distinguished from/α:/? I will distinguish these sounds together after I introduce them.

/α:/

Several key points of pronunciation: ① open your mouth, and your tongue will not touch your big teeth on both sides; ② The middle and back part of the tongue will lift up. If you think which part is bad in the middle and back, you can shrink the tip of your tongue to the innermost part to make this sound, as I mentioned on the 69th floor.

/? /

Several key points of pronunciation: ① open your mouth, and the sides of your tongue are close to the big teeth, with light contact; ② Anterior lingual arch, but the distance from the arch to the upper dentition is much greater than /e/. If you can't master it well, you can also follow my method, with the tip of your tongue in front and behind your lower teeth, and then try to keep your tongue flat.

This pronunciation is similar to /e/ in the old RP, and this sound is closer to /a/. So/? /and/? /sounds very similar.

/? //α:/and/? Comparison of/

The first floor also mentioned/? /Actually, the pronunciation is very close to /a/, and/? The pronunciation of/is only close to /a/ in recent years. How can they be different? Use a long tone. /?

/This sound, in modern RP, will be longer than ordinary short vowels. This pronunciation feature has been formed in Australian English and is called bad-lad.

Split. In modern RP, especially in front of voiced consonants,/? The/sound will become/? :/,such as bad's/? /the sound will be better than bat's/? /sound length. And/? The pronunciation of/is short and powerful.

So/? /and/? /in fact, it is distinguished by the length of the sound. Now the elderly, it is estimated that they will still use/ε//? /sound, this phenomenon also has a name, called? Nervous. I'll keep introducing.

/α:/The sound itself has a very backward feeling. If the teacher teaches correctly, it is easy to distinguish pronunciation.