Is "one" a polyphonic word?

"Yi" has only one sound, but there is a tone sandhi problem in spoken Chinese, which exists in "Qi Yi Ba Bu".

The tone sandhi rule of the word "one" is: before the words of level tone, rising tone and rising tone, it is changed to two syllables; In front of disyllabic words, it is pronounced as rising tone. However, it should be pointed out that "one person" does not need tone sandhi in all cases, as shown below:

First of all, when the word "one" is used as a cardinal word or morpheme to express the meaning of "how much", it should be tone sandhi, and it should be used as a ordinal numbers to express the order. For example, "Lian", if it is an adverb indicating "continuity", should be changed to a clear voice (try reading "He hit two three-pointers in a row"); If it is a noun that means "the first company", read the word "one" in the original tune (try reading "Wang Chengfa as the company commander"). Another example is "No.1". If it means "No.1", the word "No.1" remains unchanged. If it is a "good card", the word "one" should be pronounced unvoiced. Similarly, when you say "y and b ā n", it is "one kind"; If you say "yìbān", it means "general". Here are some examples:

The word "one" has a tone change: one moment, one generation, uniformity, one go, one thing, one room, one brain, killing two birds with one stone, falling in love at first sight, bon voyage, smooth sailing, reaching the sky in one step, meticulous, well dressed, getting up the skills, achieving nothing, interlocking and everything is ready.

The word "one" remains the same: senior one 1 class, 1 month/class, 200 1 year, exactly the same, uncompromising, one is one, two is two, one is not afraid of hardship, and the other is not afraid of death. ...

Secondly, when "one" is at the end of a word, the pronunciation remains unchanged, and the original tune is still read, as mentioned above, "single-minded, consistent, unified and unified". Even if there are words with other tones behind the words, the pronunciation of "one" remains the same, such as "unifying thoughts and understanding" The word "one" does not become disyllabic because of the appearance of "thinking" behind it, nor does it become a rising tone because of the appearance of "recognition" behind it. This is because "one" is the suffix of "unity" and has a loose relationship with the following words. There is also a typical example: the word "one" in "Eleven Jin" is a suffix of "Eleven Jin" and cannot be tone-sandhi. If you think that there is a flat "Jin" behind the word "Jin", you will change the tone blindly, which will make people mistakenly hear it as "one billion Jin"!

Let's give another example of this situation. Please understand that even if there are other words after "one", they will not change tone: May 1 (Golden Week), June 1 (Festival), July 1 (Party's birthday), August 1 (Army Flag), November 1 (National Day), in case (what's going on), one by one (inspection), single (color) and first (first).

How to pronounce the number "one"?

Before "hundred, thousand, ten thousand, one hundred million and one trillion", the word "one" should be sandhi, such as "one hundred, one thousand, ten thousand, one hundred million and one trillion". However, there is an important reminder that in long numbers, only the first "one" is a tone sandhi, and the middle and end "one" are not tone sandhi, such as "10101065438", and only the front "one" is used. For another example, although the word "one" in "One Car a Year" has to be tone-sandhi, in "Eleven Cars, Thirty-one Kinds and Forty-one Years", "one" is a numeral suffix, so there is no need to tone sandhi.

Let's start with the tone sandhi of the word "no". The tone sandhi of "no" is simpler than that of "one". The basic tone of "bu" is disyllabic, but before disyllabic words, "bu" should be pronounced as rising tone, and there is no need to change the tone in other cases. Try to understand:

Shouldn't, can't, bad, not bad, silent, wordless, unhurried, unhurried, be there or be there.

In addition, when "one, no" is in the middle of the same verb, read softly:

Take a look, think, wipe, push, move, make way, taste, clap and lift. ...