她是张老师用英文怎么说

"She is Ms. Zhang" 或者 "She is Teacher Zhang"

"Ms." 是"女士"的缩写，而 "Teacher" 是 "老师"的意思。

例句：

She is Ms. Zhang, our math teacher. (她是我们的数学老师张女士。)
She is Teacher Zhang, the one who taught us last year. (她是去年教我们的张老师。)