i need sime rules concerning the use of though and although in english
As conjunctions, although and though are generally interchangeable: Although (or though) she smiled, she was angry. Although is usually placed at the beginning of its clause (as in the preceding example), whereas though may occur elsewhere and is the more common term when used to link words or phrases, as in wiser though poorer. In certain constructions, only though is acceptable: Fond though (not although) I am of sports, I'd rather not sit through another basketball game.
from The American Heritage Dictionary