求翻译：我有一美国朋友我学校召外教我想让他来教授我们高中生英语口语英语写作今日美国今日英语每天12小时可以任选三门课是什么意思？

I have a United States friends school called my teacher, I wanted him to teach us spoken English for high school students writing in English today United States 12 hours a day in English today can choose any three classes