I hope I can be a tutor of primary student.

我希望我能成为一个小学生的补习导师。

As an outgoing primary student, I have many hobbies.

作为一名积极外向的小学生，我有许多兴趣爱好。

I know I'm only a primary student, but I can do something too.

我清楚我只是一个小学生，但我能做些什么了。

Now, my little brother is a primary student. He works very hard on study.

现在，弟弟是一名小学生了，他很努力学习，也很聪明。

Though I'm now a primary student, I would like to be a scientist in the future.

虽然我现在只是一个小学生，但是将来我想成为一名科学家。