first grade 前面要加“the”吗?
问题描述：
first grade 前面要加“the”吗?
例如：She is a first grade students.
He is in the school from the first grade to the eight grade 这句又加"the" 了
到底什么时候加，什么时候不加？
答
看情况：
She is a first grade student.
first grade 一起作定语,短语的中心语是student 前面有冠词a,这时不加.
She is a student in the first grade.
in the first grade介词短语做后置定语,要加.
She is in the first grade.介词短语作表语,也要加.