Preg_match匹配开始和结束之间的单词

我讨厌preg_match语法！

[file.txt]来源：

  sth = s("Would you like to go to the cinema "+
                               "With me?");
        }
        else if (something)
        {
            sth = s("Would you like to go to the cinema "+
                               "With me?");
        } else {
sth = s("Sure, no problem");
}

PHP:

$file = file_get_contents("file.txt");
$file = str_replace(PHP_EOL, '', $file);
preg_match_all("/s'('"(.*) /", $file, $matches);
var_dump($matches);

这显示了太多的单词，因为我有"起点"，没有结束模式。但我不知道，我怎么能用这样的结尾delimeter创建preg：

preg_match("/ [s(" .... ")] /")

我想从来源提取：

"Would you like to go to the cinema With me?" 
"Would you like to go to the cinema With me?" 
"Sure, no problem"

请帮我创建图案。