A class的用法和样例：
例句
- She took a first class in Oxford.
她在牛津大学获得头等优异成绩。 - I'd like to change this ticket to the first class.
我想换成头等票。
词汇搭配
- in a class by oneself 特好(出众
- Cut a class 缺一节课
- in a class by itself 独一无二(独具一格)...
- take a class 考试得优等(获得荣誉...
- obtain a class 毕业考试得优等...
