这并不是最有效的方法，但应该可以做到：

function the_excerpt1($s=\'\')
{
    if($s !== \'\')
    {
        $a = explode(\' \', $s);
        array_shift($a);
        array_shift($a);
        array_shift($a);
        $s = implode(\' \', $a);
        unset($a);
    }

    return $s;
}

echo the_excerpt1(\'the content starts this is the excerpt\');

Update - A more efficient way

function the_excerpt2($s=\'\')
{
    if($s !== \'\')
    {
        $s = substr($s, (strpos($s, \' \')+1));
        $s = substr($s, (strpos($s, \' \')+1));
        $s = substr($s, (strpos($s, \' \')+1));
    }

    return $s;
}

echo the_excerpt2(\'the content starts this is the excerpt\');

这里有一个快速的方法，假设$excerpt 是否有要删除前3个单词的摘录

$excerpt = "the content starts this is the excerpt";
$words = explode(\' \', $excerpt);
array_shift($words); // 1st word
array_shift($words); // 2nd word
array_shift($words); // 3rd word
$excerpt = implode(\' \', $words);

以下是您正在寻找的内容。将其放在函数中。php文件进行适当的更改。

function custom_excerpt() {
    $text = get_the_excerpt(); //Assigns the excerpt to $text
    $text = str_replace("Word1_to_replace","", $text); // replacing the word with empty string
    $text = str_replace("Word2_to_replace","", $text);
    $text = str_replace("Word3_to_replace","", $text);
    return $text;
}
add_filter(\'the_excerpt\', \'custom_excerpt\');