4（yo),7(nana),9(kokono(tu), are old fashioned..And 4(shi),7(shichi),9(kyu)are general.
It depends on the case which one you prnounce.
This page is good for you. But these are Japanese..
http://www.rd.mmtr.or.jp/~bunryu/nihon2.shtml
0 voted
August 7, 2010
0
Corrected
0 voted
August 6, 2010
0
Posted
First notebook entry: Introducing myself
Hi,This is my first post.
I would like to learn English here earnestly.
Today is rainy day here.
I have a work tomorrow.
I should get up at six thirty a.m.
