一次难忘的经历 an unforgettable experience

I have learned English for many years, but I don’t have a chance to speak foreigners before, last week, I happened to encounter a foreigner, I felt so excited, he needed my help. It was on Monday, I went to the flower shop to buy a flower for my friend, because she was ill, I was going to the hospital to see her. Then a foreigner and the boss were having conversation, but the boss didn’t know what the foreigner said, I hesitated for a while, then I came to help the boss. The boss and the foreigner thanked me so much, I felt so happy, the language I learn is useful. Since then, I want to learn English well.
我学习了英语已经很多年了，但是我之前都没有机会和外国人说话，上周，我碰巧遇到了一名外国人，我觉得很兴奋，他需要我的帮助。那是星期一，我去花店买花给我的同学，因为她生病了，我准备去医院看她。然后一位外国人和老板在聊着，但是老板不懂外国人的话，我犹豫了一会，然后我开始帮助老板。老板和外国人很感激我，我觉得很开心，我学到的语言终于派上用场了。从那时起，我想要把英语学好。