1·This is an express letter.
这封信是限时专递的。
2·What's the surcharge on this express letter?
这封快信的附加费是多少钱？
3·What's the surcharge on this express letter, please?
这封快信的附加费是多少？
4·What is the surcharge on this express letter, please?
请问这封快信的附加费是多少？
5·But before they arrived, the old man sent an express letter in secret to the Duke of Chen asking him to kill the two murderers.
但在他们到达前，石碏已经秘密快信送至陈国公爵，要求他杀死这两名凶手。
6·But before they arrived, the old man sent an express letter in secret to the Duke of Chen asking him to kill the two murderers.
但在他们到达前，石碏已经秘密地将快信送至陈国公爵，要求他杀死这两名凶手。
7·On October 19, I received an express letter, which was sent by Ministry of Labour, to inform me a meeting, between my previous employer and I, would happen on November 16, 2007.
10月19日我收到一封来自劳工部的特快专递信。来信告诉我去参加一个将于2007年11月16日与前雇主见面的会议。
8·I'm writing this letter to express our gratitude to you for we have all benefited from the lecture you gave last week.
我写这封信是为了向你表达我们的感谢之情，因为我们都从您上周所做的讲座中受益良多。
9·I'm writing this letter to express my gratitude to you for your gracious invitation.
写此信是为了向你表达我的谢意，感谢你的盛情邀请。
10·If you find it hard to express emotions, jot down talking points, or write a letter.
如果你难于表达情感，记下一些要点关键词或者写成信。