进入高三英文翻译

美国的说法是：12th grade. 十二年级；或者Senior year in high school,意思是高中的最后一年。美国学生上小学的第一年是一年级，小学毕业是六年级。初中为两年，分别为七年级和八年级。初中称为Junior High. 然后高中四年，从九年级到十二年级。高中称为High School.所以中国高中的最后一年级可以是12th grade, 也可以说是Senior year in high school.

Go to study in grade 3 of high school

大概是（也就是不确定）：Grade 6 in middle school

senior high school,grade 3

grade three of high schoolgrace three of senior school

become a Grade 3 student of high school

To three