I have to take many extra classes after school classes.

我不得不在学校下课后参加很多课外课程。

youdao

On Sunday she gets to extra classes for math and English.

星期天她去上数学和英语的补习班。

youdao

Vivian refuses to send her children to the weekend training centre for extra classes.

薇薇安拒绝把她的孩子送到周末补习班去补课。

youdao

The extra classes can help students to get ahead in their studies.

VOA: special.2010.06.18

rent extra classroom space; and offer night classes running as late as 2:30 in the morning, just to fit everyone in.

VOA: standard.2009.12.14

Extra classes are being added to schools in the areas under most pressure and new schools are being built under the free schools and academies programme.

BBC: Parents hear about primary school places

Instead, there is a heightened emphasis on school work, with players expected to attend extra classes with tutors at La Masia once they return to the centre after a day at school.

BBC: The house that built Barca

Most of the learners are farmers and require time off from learning to plant and harvest rice in June, July, August, December and January so that they have extra classes in the other months to ensure that the course is completed.

UNESCO: Country Profile: Cambodia