.htaccess and SEO friendly urls in a multilanguage website

Hi everybody.
In a website I use .htaccess to write SEO friendly url and in the root directory everything works fine.

.htaccess

#first I drop the file extension
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}.php -f
RewriteCond %{REQUEST_URI} ^(.+)\.php$
RewriteRule (.*)\.php$ /$1 [R=301,L]
#RewriteRule ^(.*)$ $1.php [QSA]

# then redirect "/vinos.php?id=xxx" to "/vinos/xxx"
RewriteCond %{THE_REQUEST} \s/vinos\.php\?v=(\w+)\s [NC]
RewriteRule ^ /vinos/%1? [R=301,L]

# internally rewrite "/vinos/xxx" to "/vinos.php?id=xxx"
RewriteRule ^vinos/(\w+)$ /vinos.php?v=$1 [L]

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This way, the url mywebsite.com/vinos.php?v=sangre_de_toro becomes mywebsite.com/vinos/sangre_de_toro.
So in the vinos.php I have:

$url = explode("/", ($_SERVER["REQUEST_URI"]));
$vino_querido = end($url);

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and then I use the variable $vino_querido in my sql query.

But I have added the support for two other language replicating the website pages in two subfolders 'en' and 'it' (the main langage 'es' is in the root). But in these subfolders the rewriting doesn't work.
The pages have different names, so I have added additional rules to my .htaccess:

RewriteCond %{THE_REQUEST} \s/it/vini\.php\?v=(\w+)\s [NC]
RewriteRule ^ /it/vini/%1? [R=301,L]

RewriteRule ^it/vini/(\w+)$ /it/vini.php?v=$1 [L]

RewriteCond %{THE_REQUEST} \s/en/wines\.php\?v=(\w+)\s [NC]
RewriteRule ^ /en/wines/%1? [R=301,L]

RewriteRule ^en/wines/(\w+)$ /en/wines.php?v=$1 [L]

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But this has no effect, the url is not rewritten and the last element of the array $url in the wines.php (and vini.php) is "wines?v=blanco_afrutado" (or "vini?v=blanco_afrutado")