9. His hospitality places us under an obligation to him.
他热情好客，使我们觉得欠他一份人情。
还能这样说：
He is so hospitable that we feel we owe him one.
We owe him for his consideration.
应用解析：
a place in the sun 有发展前途的地位，有利的地位；
a tight place 险境，困境；
feel out of place 感到拘束；
find one's place 找到工作；
lose one's place 失去工作
10. Our sincere thanks are due to you.
我们衷心地感谢你。
还能这样说：
Let us thank you sincerely.
We extend our heartfelt thanks to you.
谚语：
Give everyone his due.
一视同仁。
11. My appreciation to you is beyond words.
我无法用语言来表达对您的感激之情。
还能这样说：
I can not find word to express my gratitude.
How can I express my appreciation to you in word!
谚语：
Within sight but beyond reach.
可望不可及。
12. Your instruction let me feel refreshed suddenly.
您的教导让我醍醐灌顶。
还能这样说：
I am filled with wisdom owing to your advice.
Your words have enlightened me.
应用解析：
feel (like) oneself 觉得精神舒畅；觉得身体健康；
feel the need of 对……感到需要；
feel strongly about 对……抱强硬态度；
feel one's way 摸索着走
13. Thanks for your help in my paper.
谢谢你帮我完成了论文。
还能这样说：
Thanks to your favor, my paper was done.
I owe it to you that I finished my paper.
应用解析：
get one's walking papers 被解雇，被辞退；
on paper 在纸上；以书面形式；
set a paper 出考题
14. Thank you for your hospitality.
谢谢你们的热情款待。
还能这样说：
I do appreciate your hospitality.
Thanks for your gracious reception!
应用解析：
partake of his Majesty's hospitality 坐牢
15. You've been a big help. Thank you, Tom.
你帮我大忙了。谢谢你，汤姆。
还能这样说：
You really saved the day for me. Thank you, Tom.
Thank you for your great help, Tom.
16. We are indebted to your kindness.
我们很感谢你的热心。
还能这样说：
Our grateful thanks are due to you.
Render thanks for your kindness.
应用解析：
do sb. a kindness 帮某人的忙；为某人做好事；
out of kindness 出于好意
17. No problem.
没问题。
还能这样说：
No sweat.
It's nothing.
应用解析：
problem child 问题儿童；难处理的事情；
sleep on a problem 把问题留到第二天解决