我上三年级。

I am in the third grade.

youdao

准许他上三年级。

He is in the third grade.

youdao

我儿子上小学三年级。

My son 's in the third grade.

youdao

我永远忘不了在我上三年级时的那一顿午饭。

One lunchtime when I was in the third grade will stay with me always.

youdao

今年八岁了，上三年级。

This year eight years old, in grade three.

youdao

今年八岁了，上三年级。

This year eight years old, in grade three.

youdao