在 + Noun + 后面
后面 (hòumiàn) means "behind" or "at the back of." It is used as a postposition or noun to indicate the area behind an object or person, often appearing in the pattern 在...后面.
学校就在超市后面,走两分钟就到了。
Xuéxiào jiù zài chāoshì hòumiàn, zǒu liǎng fēnzhōng jiù dào le.
The school is right behind the supermarket; it's just a two-minute walk.
你看后面那个穿红衣服的人是谁?
Nǐ kàn hòumiàn nàge chuān hóng yīfú de rén shì shéi?
Look, who is that person wearing red clothes behind us?
请排在我后面,不要插队。
Qǐng pái zài wǒ hòumiàn, bùyào chāduì.
Please line up behind me; don't cut in line.