help on how to write a narrative

like a first lecture in the university

What are you trying to do? Write a story? Please be specific.

http://grammar.ccc.commnet.edu/grammar/composition/narrative.htm

http://my.powa.org/modules.php?name=Content&pa=showpage&pid=43
Writing a Story -- Be sure to pay attention to the charts and information about how to order your story by time (with or without a flashback).

http://www.lousywriter.com/
To help with the details, no matter what type of paper you're writing!

=)