You can sign using your own language, but do remember to write your name clearly underneath your signature using English letters.
If you are writing about business in an e-mail, the style used is often less formal, although you can follow the formal rules above if you wish.
It is common to start this "Re: " ("re" introduces the subject: it means "about") and then give a one-line summary of the subject (for example: "Re: application for place on Business English course").
English Essays - Language Used In Speeches | …
The common area of a chatroom can be confusing if there are many people chatting at the same time: most chatrooms will allow you to start a private discussion with one person in a separate window if you prefer.
If you want to chat with another user of this site about one of the topics covered by this website, you can try using the chatroom on this site at: .
Keep business letters which you receive in English (for example from a school or company) and try to learn from heir style.