Forget about it.
A: I've got some bad news about the pen you lent me.
我得告诉你个坏消息,关于你借我的那支笔。
B:What's that?
什么坏消息?
A:I'm afraid I lost it on my way home yesterday.
我昨天回家的时候可能弄丢了。
B:Don't worry about that. It's just an old pen.
别放心上,那只是支旧笔。
A:Thank you.I feel really stupid though.
谢谢你,不过我还是觉得自己很笨。
B:Forget about it.I'm planning to buy a new one anyway.
别再想了,我怎么着也打算新买一支了。