她参加了许多课外活动。
Participating in extra-curricular activities enables us to learn to negotiate and cooperate with fellow students.参加课外活动可以让我们学习如何与同学进行协商与合作。
On the one hand, participating in extra-curricular activities allows children to develop their hobbies while on the other hand, too many such activities can increase children's burden.一方面,参加课外活动可以让学生发展自己的兴趣,而另一方面,太多的课外活动可能会增加学生的负担。