1. When "o" is written by itself, it is pronounced as a long "o" sound, similar to the "o" in the English word "bone".
2. When "o" is followed by another consonant, it is pronounced as a shorter "o" sound, similar to the "o" in the English word "hot".
Here are some examples of how "o" is pronounced in Japanese:
* Ohayo gozaimasu (おはようございます) - Good morning
* Konnichiwa (こんにちは) - Hello
* Sayonara (さようなら) - Goodbye
* Arigato (ありがとう) - Thank you
* Dozo (どうぞ) - Please
The pronunciation of "o" can also change depending on the pitch and intonation of the speaker. For example, the "o" in the word "ohayo" is pronounced with a high pitch, while the "o" in the word "konnichiwa" is pronounced with a low pitch.
It is important to note that the pronunciation of "o" in Japanese can vary depending on the region of the country. For example, in the Kansai region, the "o" sound is often pronounced as a long "o" even when it is followed by another consonant.