有只有三个声调的官话方言吗?东干语有四个音素的声调,但是在没有变调的上下文只有三个不同的声调, 例如在短语的末尾。有没有在每个上下文都用三个声调的方言?
Are there any Mandarin dialects with three tones? Standard Dungan has four phonemic tones, but only has three in contexts where tone sandhi doesn't apply, such as phrase-finally. Are there any with three tones in all contexts?
Excerpt from Wikipedia article on Dungan
There are two main dialects, one with 4 tones and the other, considered standard, with 3 tones in the final position in phonetic words and 4 tones in the nonfinal position.