As guests continue to arrive, it is usually considered polite for the men in the group to stand when a woman enters the room and continue to stand until she is seated. However, most young people and some groups of older people that stress equality of the sexes no longer observe the custom. A visitor should be sensitive to each situation and follow the lead of the Americans present.

As the guests leave, it is the custom to thank the hostess for a very pleasant evening. One may say anything that expresses appreciation. Common expressions are goodbye .it was so I’ve had a very nice time. For larger favors than a dinner party, such as an overnight or weekend visit it is customary to send a thank you note

As guests continue to arrive, it is usually considered polite for the men in the group to stand when a woman enters the room and continue to stand until she is seated. However, most young people and some groups of older people that stress equality of the sexes no longer observe the custom. A visitor should be sensitive to each situation and follow the lead of the Americans present.
当客人陆续进来时，通常的礼仪是男人站起来，等进来的女人坐下来后再坐下来。但是，多数年轻人及那些讲究性别平等的成人却不再遵守这一习惯了。客人要看情况行事，并遵守美国目前的习俗。
As the guests leave, it is the custom to thank the hostess for a very pleasant evening. One may say anything that expresses appreciation. Common expressions are goodbye .it was so I’ve had a very nice time. For larger favors than a dinner party, such as an overnight or weekend visit it is customary to send a thank you note
当客人准备走时，习惯是客人要感谢女主人准备这丰盛的晚餐。你可以讲各种感谢的话。通常的表示是再见。这晚餐真好，我度过这欢快的夜晚。如果是比晚餐规格要高的活动，类似晚上过夜或周末访问那样的活动，常规是回去后要寄一个感谢卡表示感谢。