高中三年级英文怎么说?谢谢

高中是senior high school， 三年级是grade three，
重点中学高三学生students in key（重点的） senior high school grade three
另外：senior 大学四年级学生；高中三年级学生

Junior 大学三年级学生；高中二年级学生

sophomore 大学二年级学生；高中一年级学生
senior school 是（英）11岁以上的大龄儿童学校
高三是Senior High Grade Three

The third year in senior high school
grade three at senior high school

The third year in senior middle-school.
Senior middle-school grade three.

The third year of high school

grade three of senior school
楼上错的

senior 3