Here's how you pronounce "gou" in each tone:
* First tone (mā): "gōu" (like "go" with a slightly longer "o" sound)
* Second tone (má): "góu" (like "go" with a rising intonation)
* Third tone (mǎ): "gǒu" (like "go" with a dip in the middle, then a rising intonation)
* Fourth tone (mà): "gòu" (like "go" with a falling intonation)
Example:
* 狗 (gǒu): This is the most common word with the "gou" sound, meaning "dog." It is pronounced in the third tone.
Let me know if you want to know the pronunciation of any other Chinese words.