伪静态URL重写不成功

Question

apache伪静态规则，按这种可以生效

<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [QSA]
</IfModule>

想对其中的两个控制器进行进一步简化，就是把http://www.abc.com/news/detai...简化为http://www.abc.com/news/12.html，其余的仍然保持原有规则不变，新增规则后变成这样：

<IfModule mod_rewrite.c>
RewriteEngine on

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^news/(\d+).html$  index.php/news/detail/id/$1 [S,PT,L]
RewriteRule ^(.*)$ index.php/$1 [QSA]
</IfModule>

结果就报500错误了...