2--This is your seat, Mr. Chen. Sit down, please.
 
1--Thank you. I'm really a bit nervous now. I know nothing of your table manners.
 
2--Don't worry， Mr. Chen. As for table manners, there is only one rule you must observe. That's to make yourself at home.
 
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注解：
 
1.nervous神经紧张的；神经系统的，神经性的
2.manners礼貌；礼仪  
3.observe注意到；观察；评论；遵守，奉行
 
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译文：
 
1--饭菜已经准备好了，请入席吧。
2--这是您的座位，陈先生，请坐。
1--谢谢你，我真有点紧张，我对你们的宴会礼节一点也不懂。
2--不要担心，陈先生。至于宴会礼节，只有一项您要遵守，那就是不要客气。