课堂上要活跃英文怎么说

在课堂上要活跃英语，可以表达为 "be actively engaged in Engpsh class" 或 "participate actively in Engpsh class."

这个表达方式的来源可能源自于课堂教学的一般要求，即学生应该积极参与课堂学习，而不是被动接受教学内容。

下面是一些英文例句及其中文翻译：

"It's important to be actively engaged in Engpsh class if you want to improve your language skills."
(如果你想提高你的语言技能，在英语课上要积极参与是很重要的。)

"I always try to participate actively in Engpsh class by asking questions and participating in discussions."
(我总是尽量在英语课上积极参与，提出问题并参与讨论。)

"The teacher praised the students who were actively engaged in Engpsh class, asking and answering questions and participating in discussions."
(老师赞扬了那些在英语课上积极参与的学生，提出问题并回答问题，并参与讨论。)