备课用英语可以翻译为 "prepare lessons"。这个词组来自英语动词 "prepare"，意思是准备，加上名词 "lessons"，意思是课程。例如：

I spent the weekend preparing lessons for my students. 我花了整个周末为我的学生准备课程。

She always takes time to prepare her lessons carefully. 她总是花时间仔细地准备她的课程。

He is known for his well-prepared lessons. 他以准备充分的课程而闻名。