the teacher, a lady from northern of china ,teaches us english.
用插入语来做补充解释,更清楚, 还有文学韵味。
The female teacher from northern China teaches us English.
The lady who comes from north teaches us English.
A lady from the north teaches us English.
方案1
The lady who teaches us English comes from northern China.
方案2
Our English teacher is a lady coming from northern China.