对你微笑，只是我的礼貌。

smile at you, just my manners.

有礼貌的人，能走遍天下。

a polite person, can travel the world.

礼貌使人类共处的金钥匙。

manners make human co-existence of golden key.

挤出来的微笑，最不礼貌。

to smile forcibly is the least polite.

永远不要忘了说“谢谢”!

Never forget to say “thanks”.

如果你失败了，千万别忘了吸取教训。

If you fail, don't forget to learn your lesson.

微笑不一定是礼貌，有时也会是警告。

A smile is not always polite, sometimes it can be a warning.

真正的礼貌就是克己，就是千方百计地使周围的人都像自己一样平心静气。

True politeness is self-control, is to do everything possible to make everyone around you as calm as yourself.

欢迎来杭州。

Welcome to Hangzhou.

欢迎您来参加西博会。

Welcome to the West Lake Expo.

您好。晚上好!

Hello. Good evening!

您先请!

You first, please!

我能帮助您吗？

Can I help you？

我能为您做些什么？

What can I do for you？

谢谢!

Thanks!

这些名句涵盖了日常生活中的各种礼貌用语和表达，适合在多种场合使用。希望这些对你有所帮助!