1.
The primary grades in school are grades one through three.
学校的低年级是一年级到三年级。
2.
The third and fourth grades are in this three-story building.
三年级和四年级在这栋三层的楼里。
3.
John skipped the fourth grade.
约翰（从三年级）跳到五年级。
4.
The student was demoted from the third grade to the second
那个学生从三年级降到二年级。
5.
You see, I am a sophomore and Miss Yang is a junior.
你瞧，我是2年级的，杨小姐是三年级的。
6.
He skipped the fourth grade because of his aptitude.
他因天资聪颖从三年级跳到了五年级。
7.
Her son skipped the second grade.
她儿子从一年级跳到三年级。
8.
The seniors defeated the juniors by 3-1.
四年级学生以三比一战胜了三年级学生。
9.
The child has skipped to the third grade as he did exceedingly well in his studies.
这孩子因成绩优异而越级升入三年级。
10.
Most of the senior boys are going steady with juniors and sophomores.
四年级的男生大都总是要同三年级和二年级的学生一起去的。
11.
The boys in Form III will soon be promoted to Form IV.
三年级的男孩们很快就会升上四年级了。
12.
Mary, a junior, will graduate next year.
玛丽, 一名三年级的中学生, 明年将毕业。
13.
Did you take the course as fresher, sophomore, junior, senior, or graduate student?
你学习这门课程是作为大学一年级，大学二年级，大学三年级，大学四年级，还是研究生？
14.
Did you take this course as a freshman, sops, junior, senior, or graduate student?
你学习这门课程是作为大学一年级、二年级、三年级、四年级学生还是研究生?
15.
We shall have to design a new curriculum for the third year
我们得设计出三年级的新课程
16.
A playground foaming with third graders.
操场上聚满了三年级学生
17.
My name is Ching– ming Wang. I'm a junior at BeiJing University.
我叫王庆铭，我是北大三年级的学生。
18.
I am a pupil of grade 3 in Qingdao Milky Way School.
我现在在青岛银河学校三年级上学。