5. I will show you the way.
我来领路。
还能这样说：
Please follow me.
This way, please.
谚语：
The shortest way round is the longest way home.
欲速则不达。

6. Go ahead and have a seat, make yourself comfortable.
请随意找个位子坐下，别客气。
还能这样说：
Please have a seat, make yourself at home.
Please sit down and help yourself.

7. Excuse me, are you John from DB cooperation?
打扰了，你是来自DB公司的约翰吗？
还能这样说：
Pardon me, are you from DB cooperation? John?
I beg your pardon, do you from DB cooperation? John?
谚语：
The fox preys farthest from his hole.
狐狸捕食，远离洞府。（兔子不吃窝边草。）

8. Being business companions is our common desire.
成为贸易伙伴是我们的共同的愿望。
还能这样说：
Our common desire is to become business companions.
We aim to become the business companions in the same purpose.
应用解析：
aim at 向……瞄准，旨在，针对