初中三年，我们都有一些难以忘怀的经历。学校英语俱乐部将组织题为"An Unforgettable Experience"的征文比赛。请根据提示，写一篇短文参赛。

1）What was the experience?

2）What have you learned from it?

注意事项∶

1）词数∶100 词左右（文章开头已给出，不计入总词数）;

2）文中不能出现真实姓名、校名等信息;

3）文章必须包含所有要点，可适当发挥，使短文连贯、通顺。

An Unforgettable Experience

Looking back on the past three years, everyone had some unforgettable experiences.