A：I'm sorry, but I can't find the book you lent me. I guess I have lost it.
很抱歉，我找不到你借給我的那本書了。我想我是給丟了。
B：Don't worry about it.
別擔(dān)心了。
A：I really feel bad about it. Let me buy you a new one.
對(duì)此我真的很抱教。讓我再給你買本新的吧。
B：No. Don't be silly. I wouldn't dream of letting you do that.
不用了，別這么傻。我不會(huì)讓你那么做的。