You speak so softly in English, but usually you're so loud!
You are always lively and loud, but when you speak in English you get quiet.
You speak so softly in English,「英語で話すときは声が小さい」 but usually you're so loud!「でも、普通は声が大きいよ」
You are always lively and loud,「君はいつも活発的で声が大きい」 but when you speak in English you get quiet.「でも英語で話すと静かになるよ」