If you call someone in Japan, like this way is preferable,
Such as 'family name + san' is almighty, any case you can use this method. 'san' looks like 'Mr.' and 'Ms' but I can say it is completely different. When you meet some Japanese, try this way. They will feel more natural, and you will be able to build better relationship than you thought. Please keep one thing in your mind, you can use 'san' in the case of speaking, not in the addressee. If you send a letter officially, read Advance.
2. For children: first name + 'kun' (boy), first name + 'chan' (girl)
When you are invited from Japanese family, you would meet children. You can use this method only for children.
But you can do to only children who less than 18 years old.
3. To superiors: family name + 'sama'
When you meet superiors, you will be able to call one with respect using this method.
For instance, I call some director in client company, Nakata-sama.
In other case, you can use this method in an addressee for the letter and the post card.
----------------------------------- Nakata Yoshihiro sama STAR WARS Co., Ltd Fuji International Bldg. 8F 123-45 Kintoki, Chiyoda-ku Tokyo, Fuji International Bldg. 8F 123-45 Kintoki, Chiyoda-ku Tokyo,Japan
Post code 143-0006 --------------------------------
Welcome to Japan! You may want to speak to local Japanese people. This page will help you learn basic Japanese with sound. It's originally made for my co-workers in Belgium, but I think it help something for you. Especially 'Basic' looks very easy, but it has an immediate effect.
Let's start from 'Basic'. There are only two wards. はい。 HAI. (Yes.) いいえ。 EEYE. (No.)
If you spoke Yes/No in Japanese "HAI/EE YE", one would be surprised and stare at your face with big smile. If you are not sure, ask to Diego. He is already an expert Japanese speaker.