Nginx伪静态规则怎么写

原地址为

http://www.qinyin.com/?plugin=Usercenter
http://www.qinyin.com/?plugin=Usercenter&QY=emall
http://www.qinyin.com/?plugin=Usercenter&QY=blog

怎么实现类似这样的，或者.html，又或者其他伪静态，只要不是动态就行

http://www.qinyin.com/plugin/Usercenter
http://www.qinyin.com/plugin/Usercenter/QY/emall
http://www.qinyin.com/plugin/Usercenter/QY/blog

我的伪静态规则现在只有首页

location / {
    index index.php index.html;
    if (!-e $request_filename){
        rewrite ^/(.*)$ /index.php last;
    }
}