2. i'm sorry it has been lent out.
真抱歉，此书已借出。
也可以这样说：
i'm sorry. the book you want has been taken.
3. i'd like to borrow these five books.
我想借这五本书。
4. have you got your library card?
你带借书证了吗？
也可以这样说：
can you show me your library card?
5. i want to check out two books on international trade. can you show me where i can find them?
我想借两本有关国际贸易的书，你能告诉我在哪儿可以找到吗？
6. you must return them within a month.
请你务必在一个月内归还。
7. how long may i keep these books?
这些书可以借多长时间？
8. what would happen if i've not finished reading them within a month?
如果我一个月内没有归还会怎样？
培训班里学习忙
dialogue
sarah joins an english training class and is talking with her colleague about it.
莎拉参加了一个英语培训班。现在正和同事谈论这件事。
jane: what are you studying all day for? we are rather tired after work every day.
简：你成天学习为了什么？我们每天下班后就够累了。
sarah: i know! but you know my oral english is extremely poor. i want to improve it. so i have to join a training class.
莎拉：我知道。但是，你知道的，我的英语口语非常差，我想提高口语能力。因此我不得不参加一个培训班。
jane: what have you learned from the training course?
简：你参加培训课有哪些收获？
sarah: can you see any improvement of my speaking?