她是我们班的数学课代表。

She is our class's math subject representative.

每个学期都会选出新的课代表。

A new subject representative is chosen every semester.

课代表通常会帮助老师管理课堂。

The subject representative usually helps the teacher manage the class.

作为课代表，他负责收发作业。

As the subject representative, he is responsible for collecting and distributing homework.

她因为表现出色被选为英语课代表。

She was chosen as the English subject representative because of her excellent performance.

担任科学课代表和卫生值周。

As the representative of science_and_health value of the week.

我今天想要竞选英语课代表。

I want to compete in the English course challenge today .

我是英语课代表。

My favorite subject is English!

在校期间曾任文艺委员、化学课代表。

A delegate means you are incharge of a certain subject.

那时他选我为班级的物理课代表，还因为一位公共车司机欺负我和他打了架，这事很多同学都还记得。

At that time I was picked by him as the class representative of physics. And most of our classmates can still remember he got involved in a fight when I was bullied by a bus driver.