为什么我的链接没有缩短？

Question

我正在尝试缩短我的链接以使它们变得漂亮，就像你在我的.htaccess代码中看到的一样，但由于某种原因它并没有听取它们。为什么不起作用？

Options +FollowSymlinks
RewriteEngine On 
RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.migrus.mi-g\.us
RewriteRule ^(.*)$ $1?lang=rus [QSA,L]


RewriteRule    ^home1/   home1/home1.php [NC]
RewriteRule    ^home2/   home2/home2.php [NC]
RewriteRule    ^home3/   home3/home3.php [NC]

RewriteRule    ^certificates/([A-Za-z0-9-]+)/?$    certificates/certificate.php?cert_clean_url=$1 [QSA]
RewriteRule    ^order-form/?$    order-form/order-form.php [QSA]
RewriteRule    ^about/   about/about.php [NC]
RewriteRule    ^site-map/?$   site-map/site-map.php [QSA]

RewriteRule    ^contact/    contact/contact.php [NC]
RewriteRule    ^blog/   blog/blog.php [NC]
RewriteRule    ^blog-single/([A-Za-z0-9-]+)/?$    blog-single/blog-single.php?post_clean_url=$1 [QSA]

ErrorDocument  404  /404.php