In this lesson, we will introduce the numbers one through ten. Four and seven are special in that they both have two separate readings. Four can be read as し or よん while seven can be read as なな or しち. In general, よん and なな, are much more common.
Nihon-shiki romanizationwatasi ha tyuugoku kara kimasita
Hepburn romanizationwatashi wa chuugoku kara kimashita