A：Don't forget to bring your ruler when you go to the math class.
你上数学课的时候别忘了带尺子。
B：Thank you for reminding me. I almost forgot it.
谢谢你提醒我。我差点儿忘了。
bring /br??/ v. 带来；导致；引起
math /m?θ/ n. 数学（为 mathematics 的口语形式）
用尺子测量长度 measure the length with a ruler
A：Please measure the length of the line with a ruler first.
请先用尺子量一下这条线的长度。
B：OK. But does this ruler measure accurately? It has only one scale marked in centimetres.