is it Ok if I bring that one by in a couple of days?by in是什么用法?L（图书管理员）:I see you've got some books there.Is that the one you were asked to return?S（学生）:No,I left it in my dorm room.These are books I need to check out today.Um…is it Ok if Ibring that one by in a couple of days?
问题描述：
is it Ok if I bring that one by in a couple of days?by in是什么用法?
L（图书管理员）:
I see you've got some books there.Is that the one you were asked to return?
S（学生）:
No,I left it in my dorm room.These are books I need to check out today.Um…is it Ok if I
bring that one by in a couple of days?
答
不要by in 连在一起看，这个只是两个短语巧合在一起时，介词重叠的现象。是巧合，不是固定短语，更不是语法错误。
而是前面的bring,,,by就是带。。。过来
in a couple of days 是说未来几天
翻译
图书管理员：我看见你在那儿放了一些书，里面有你之前说要还的书吗？
学生：不是，我忘在宿舍了。这些是我今天要借走的。我过几天再把要还的书带过来可以吗？
答
并不是by in 连在一起看
而是前面的bring,by就是带.东西过来
in a couple of days 是说未来几天
对话的意思是：
图书管理员：我看见你在那儿放了一些书,里面有你要还的书吗?
学生：不是,我放在宿舍了.这些是我今天要借走的.我过几天再把要还的书带过来可以吗?