15. Let me know if you have more questions for better understanding of our humor. I can help you with your training， particularly with the humor. That is something I'm good at。

Take care.

Ben

我的朋友经常都会很客气地用Let me know if you…这样的方式问我是否需要更多的帮助等。我当然是抓住一切机会多提问啦！因为问得越多，从他那儿了解到的东西就越多啦。

16. OK， that's it for the moment. I'll be looking for a message from you tonight， I hope。

Take care！

Ben

朋友没有直接说I hope you can write to me tonight， 而是很委婉地说I'll be looking for a message from you…，这种间接的提出希望和要求的表达方式很新颖哟，还有点不露痕迹的意思！用一下试试看。

17. Well， since I don't have much to respond to this time， and since I have to get up early in the morning， I'll quit for now. I hope you had a good time with your friend.

Talk to you soon.

Ben

这里用两个since (表原因)来给这封邮件画上句号，很自然也很贴切。

18. OK， that's all for now. I need to get a little sleep before I go to the airport. Talk to you soon。

Ben！

这里get a little sleep 用得很好，把sleep 当名词用，而且搭配动词get， 可以丰富我们过去单一的表达，如：I need to sleep for a while. 对比一下，哪一个更生动一些呢。