急！如何用英语说年级？

class one grade one of senior middle school

用介词in…………in Class 1, Grade 1 of high school

"Form 4" is equal to 高一班

but we don't say "1" after "Form 4", so you can't translate it literally. in England or in hong kong, you can say "Form 4 A", "Form 4 B", etc...

you can also say "Grade 10" to refer to 高一班

grade 10 。。。class one
我们老师都这么用
高一就是十年级

class1 grade1

Class 1, Grade 1