Comments for 君

Could anyone tell me please , how to use "kimi" in a sentence?

Onegai Itashimasu!

In the above comment I would like to use "kimi" as "buddy".

Oshiete Kudasai.

i dont know, but why does it have kun kanji?

Adachi, because it has the same kanji. "Kun" is a suffix used after names and "kimi" is a pronoun used mainly at the beginning of the sentence, like "watashi" or "anata". Or so I think.
Montek, click "entry details" link and then "sample sentences" and you'll have plenty to choose from, i.e.  君は僕にとてもいらいらしている (you really annoy me, buddy).
Not that I really mean it. :)

thank you Jetstorm, my japanese is not good enough to read the example but because of your post my knowledge could increase anyway.

Thank you, but I just copied it from sample sentences for "kimi". I'm a grammar beginner as well. You can search for it yourself, there is an option "search sample sentences" in the dictionary.
It was 君は僕にとてもいらいらしている (kimi ha boku ni totemo iraira shiteiru).