1.
Skip from the fourth to the sixth grade.
从四年级跳级到六年级。
2.
He had to repeat the fourth grade.
他读四年级时留级一年。
3.
The primary grades in school are grades one through three.
学校的低年级是一年级到三年级。
4.
The boy was kept back in the fourth grade.
男孩在四年级时留级。
5.
Hello! What grade are you in?
你好！你上几年级？
6.
So, what grade are you in, man?
你几年级了, 伙计?
7.
What grade are you in, Fanny?
你读几年级，Fanny?
8.
Medals will be awarded to contestants with the top three scores in each level.
比赛分四组:一到二年级，三到四年级，五到七年级，八到十一年级。
9.
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。
10.
John skipped the fourth grade.
约翰（从三年级）跳到五年级。
11.
-Yes, I skipped the third grade.
对，我从二年级跳到四年级。
12.
The student was demoted from the third grade to the second
那个学生从三年级降到二年级。
13.
We are freshmen and they are sophomores.
我们是一年级学生,他们是二年级学生。
14.
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。
15.
The youngest children are in the first form, the oldest in the sixth form.
最小的儿童上一年级, 最大的上六年级.
16.
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。
17.
Her son skipped the second grade.
她儿子从一年级跳到三年级。
18.
Your left hand says, @What grade, What grade are you in?
左手对右手说，“你上几年级，你上几年级？”