我忙完了英语怎么说

"I'm done with English" 或 "I have finished with English" 是表达完成英语学习或工作的常用说法。这是一种习惯用语，没有特定的来源。

例句：

"I'm done with English class for the day." (今天的英语课我已经学完了)
"I have finished with my English homework." (我已经完成了英语作业)
"I'm done with English, let's switch to Chinese." (我已经学完英语了，现在转到学中文)