unit 309
购买教课书
dialogue
英语情景对话
A:Can you help me find my books?
A:你能帮我找到我要的书吗?
B:Certainly, do you have your school schedule? The books are arranged by course number and instructor.
B:可以,你有没有带课程表?所有的书都是按照课程编号和任课老师排序的。
A:Oh, I see. Thank you.
A:哦,我明白了,谢谢。