apache重写问题

PHP code

RewriteCond %{HTTP_HOST} ^news\.new_ci\.com
#RewriteRule read-(\d+)\.html http://news.new_ci.com/index.php/read/index/$1
RewriteRule read-(\d+)\.html index.php/read/index/$1

注释那行可以访问但是会301，下面那种写法不行，要实现输入 news.new_ci.com/read-1573.html 实际访问的为news.new_ci.com/index.php/read/index/1573应该怎么写规则？框架是ci

------解决方案--------------------
RewriteRule read-(\d+)\.html /index.php/read/index/$1 试下
------解决方案--------------------
RewriteCond %{HTTP_HOST} ^news\.new_ci\.com

这句是不是有问题啊!