The teacher arrived at the school three year ago..（句型转换）
问题描述：
The teacher arrived at the school three year ago..（句型转换）
答
The teacher got to the school three years ago
The teacher reached the school three years ago
The teacherhas been at the school since three years ago
The teacherhas been at the school for three years.
The teacherhas been at the school since 2003.