你要和朋友们在课内课外多练习英语。

Firstly, you should often practice English with your friends in class and after class.

youdao

不要只学语法规则，尽量读英语故事，课内课外多说英语。

Second, don't only learn grammar rules. Try to read stories in English, and speak English both in class and out of class.

youdao

到五年级的时候，班级落后的学生一年课内课外阅读量只有六万字，班级中等的学生一年大概读了八十万字。

By fifth grade, a child at the bottom of the class reads only about 60, 000 words a year in and out of school, compared to a child in the middle of the class who reads about 800, 000 words a year.

youdao

And I think there is all sorts of different ways to learn that outside the classroom that complement the classroom. -Yes.

我认为，从许多事情中，我们都会了解到,正是课外活动,丰富了课内的学业。

普林斯顿公开课 - 人性课程节选