“小学 4 年级”用英语可以说“Grade 4 of primary school”或者“Fourth grade of primary school” 。
在英语中,“grade”有“年级”的意思,“primary school”表示“小学”。例如:“I'm in Grade 4 of primary school.”(我在小学 4 年级。)
我们还可以用“the fourth grade in primary school”来表达,比如:“She is in the fourth grade in primary school.”(她在小学 4 年级。)