广东四会粤语蟹、流两摄今读音有两点比较特别:一是分主元音为a、■的两类韵母,古平、上声字为a类,古去声字为■类;二是语流中,今读a类韵母的古平、上声字,在多音节词前字位置时,变为■类韵母,与古去声字的今读相同。借助蟹、流两摄连读变韵及四会乡下粤语下寮话等材料,我们倾向于认为四会粤语蟹、流两摄异调分韵源于连读变韵的固化。 Cantonese four will Cantonese crab, flow two photo this pronunciation has two more special: First, the main vowel for a, ■ two types of vowels, ancient flat, on the sound of a class, Is the language stream, now read a class vowels ancient level, on the sound word, in the word position before the multi-syllable words, into a vowel ■ vowels, and the ancient words to go the same today. With the help of crabs, the flow of two films, the reading and changing rhyme, and the four social Cantonese dialect and other materials, we tend to think that the four Cantonese crabs and the flow of two different tone rhyme stems from the reading of the rhyme curing.