"Sing with the teacher" 可以用英文表示为 "sing along with the teacher" 或 "sing in unison with the teacher"。

"Sing along with" 这个短语的意思是 "和……一起唱"，"unison" 是指 "同声唱"，所以 "sing in unison with" 意思是 "和……同声唱"。

例句：

Can you sing along with the teacher? (你能和老师一起唱吗？)
Let's all sing in unison with the teacher. (我们都和老师同声唱。)

希望这些信息对你有帮助。