I studied English at junior hight school and high school. But I stopped for about 5 years after graduation. Then, I began to study again (this year).
I studied English at junior hight school and high school.
私は中学校と高校で英語を勉強しました。
But I stopped for about 5 years after graduation.
でも卒業後５年間勉強を辞めていました。
Then, I began to study again (this year).
そして、（今年）また勉強し始めました。
勉強し始めたのが、今年なら this year, 今月なら this month, 今週なら this weekなど、適切なものに変えてください。
どうぞ、末永く、英語の勉強続けてくださいね。
I had studied 6 years in school and restarted recently.
I had studied 6 years in school and took a break but got back into it recently.
I didn't study English for 5 years since learning it in Junior High and High School but restarted recently
I had studied 6 years in school = 6年間学校で習ってた
recently = 最近
restarted = また始めた
got back into it = また始めた
took a break = 一時的にやめた
Junior High = 中学
High School = 高校
I had studied 6 years in school and restarted recently. ＝ 6年間学校で習ってたけど最近また習い始めた
I had studied 6 years in school and took a break but got back into it recently. = 6年間学校で習って一時的にやめたけど最近また習い始めたよ！
I didn't study English for 5 years since learning it in Junior High and High School but restarted recently！ = 中学と高校から5年間勉強しなかったけど最近また習い始めたよ！
DMM英会話を始めるまで ＝ Before starting lessons at DMM language school
日本 
