Una url friendly

i use on my server nginx with no apache server, i find these rules:

index index.html index.htm index.php;

rewrite "^/page/(.*)$" /page.php?i=$1 last;

rewrite "^/m/(.*)$" /modules/index.php?r=$1 last;

rewrite "^/s/([a-zA-Z0-9_]+)/([a-zA-Z0-9\.]+)" /storage.php?o=$1&f=$2 last;

My url in posts view-post?id=50 its it's horrible. howto fix it to friendly URL??