Culture generally refers to patterns of human activity and the symbolic structures that give such activities significance and importance. ---by http://en.wikipedia.org/wiki/Culture
You can begin with the following sentences:
☆Hello everybody,I come from *** , a country with ***
☆Hi everyone,I'd like to say something about *** in my country.
☆Good morning(afternoon,etc),I have just read/watched *** . Let me tell you now.
Culture consists a variety of things,such as
☆meanings of certain colours ☆taboos
☆special constructions ☆......
Enjoy yourself here~
Love , Kefan
Sep.2nd , 2008