高年级的的英文：
senior

Fag:a student at a British public school who is required to perform menial tasks for a student in a higher class.
受高年级使唤的低年级学生:在英国公立学校为高年级同学做跑腿活儿的学生。

English and mathematics are mde much of in senior high schools
英语和数学在高中高年级学生中很受重视

In mathematics this class is above the norm for the senior year.
以数学来说，这个班级程度高于高年级的常轨。

I became completely uninterested in my upcoming graduation, the senior-class play and the prom.
我因此对即将到来的毕业典礼、高年级演出和班级舞会完全没了兴致。

The list might include being head of a fundraising campaign, or acting a juicy role in the senior play
所有事项可以包括你曾当过筹集运动的负责人，或在学校高年级演剧时扮演过出色的角色。

Tom fagged for some elder boys.
汤姆为一些高年级学生打杂。

Are you a senior student here? I'm a freshman.
你是这儿的高年级学生吗？我是新生。

He is better suited to a job with older pupils.
他较适合教小学高年级学生.

Students leave middle school at the end of their senior years.
学生在中学高年级结束之后离校。

act as a fag for older boys, in British public schools.
在英国公立学校低年级为高年级的同学作苦工。

He is senior to me.
他的职位比我高。

The interests of seniors tend to be . . . varied
老年人的兴趣倾向于…多彩的。

Senior prom, do you have the fever?
毕业生舞会，你有兴趣吗？

Seniors and moms flocked to their booth.
老年人和母亲们蜂拥来到他们的摊位。

There are separate rooms for senior and junior officers.
高级军官和下级军官的房间是分着的.