高校時代にオンラインで日本語の授業を受講し、日本語の勉強のし方を学びま

高校時代にオンラインで日本語の授業を受講し、日本語の勉強のし方を学びました。

Results (English) 1:

When I was in high school, I took a Japanese class online and learned how to study basic Japanese.

Results (English) 2:

I took a Japanese class online in the high school and learned how to study basic Japanese.

Results (English) 3:

In high school, I took Japanese classes online and learned basic japanese studies.