英语词汇upper grades怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
First, I think the upper grades of primary school opened on the course a little bit early.
我觉得小学五六年级就开这门课有点早。
2
Educators and psychologists have long feared that children entering school with behavior problems were doomed to fall behind in the upper grades.
一些教育家和心理学家一直都为有行为缺陷问题的儿童入学后注定随着年纪的增长学习成绩会逐渐落后倍感忧虑。
3
Interestingly, in the upper grades, teachers typically teach just two periods a day (typically 45 minutes in length) out of eight or nine periods.
有趣的是，在高年级，每天有八到九节课，而每位老通常每天只上两节课（每节课一般十五分钟）。

单词	upper grades
释义	upper grades 简明释义高年级：指学校中较高的年级，通常是指小学四年级及以上或中学高年级。网络释义短语 1 the upper grades in school 学校的高年级双语例句 1 First, I think the upper grades of primary school opened on the course a little bit early. 我觉得小学五六年级就开这门课有点早。 2 Educators and psychologists have long feared that children entering school with behavior problems were doomed to fall behind in the upper grades. 一些教育家和心理学家一直都为有行为缺陷问题的儿童入学后注定随着年纪的增长学习成绩会逐渐落后倍感忧虑。 3 Interestingly, in the upper grades, teachers typically teach just two periods a day (typically 45 minutes in length) out of eight or nine periods. 有趣的是，在高年级，每天有八到九节课，而每位老通常每天只上两节课（每节课一般十五分钟）。
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