尝试替换此：

        <?php
            /* Include the Post-Format-specific template for the content.
             * If you want to override this in a child theme, then include a file
             * called content-___.php (where ___ is the Post Format name) and that will be used instead.
             */
            get_template_part( \'content\', ( post_type_supports( get_post_type(), \'post-formats\' ) ? get_post_format() : get_post_type() ) );
        ?>

使用此选项：

<?php echo my_excerpt(get_the_ID(), 300, \'Read More\'); ?>

然后将其添加到函数中。php文件：

function my_excerpt($postid, $len = 500, $more = false) {

    $excerpt = apply_filters(\'the_excerpt\', get_post_field(\'post_excerpt\', $postid));

    if(empty($excerpt)) $excerpt = strip_shortcodes(strip_tags(apply_filters(\'the_excerpt\', get_post_field(\'post_content\', $postid))));

    if(strlen($excerpt) > $len) $excerpt = substr($excerpt, 0, $len-3) . \'…\';

    if($more) $excerpt .= \'<a class="read-more" href="\' . get_the_permalink($postid) . \'">\' . $more . \'</a>\';

    return $excerpt;
}

默认情况下，将返回帖子内容的前300个字符。将my\\u摘录调用中的“300”更改为要返回的字符数（注意，这不是要返回的单词数，而是要返回的字符数）。

您可以尝试以下操作：

    <?php
    get_header(); ?>

    <?php if ( have_posts() ) : ?>

        <?php do_action( \'toivo_before_loop\' ); // Action hook before loop. ?>

        <?php /* Start the Loop */ ?>
        <?php while ( have_posts() ) : the_post(); ?>

            <?php
            /* Include the Post-Format-specific template for the content.
            * If you want to override this in a child theme, then include a file
            * called content-___.php (where ___ is the Post Format name) and that will be used instead.
            */
            echo wp_trim_words( get_the_content(), $num_words = 50, $more = \'...\' );
            echo \'<a href="\'.get_the_permalink().\'">Read More</a>\';
            ?>

        <?php endwhile; ?>

        <?php
        the_posts_pagination( array(
        \'prev_text\'          => __( \'Previous page\', \'toivo-lite\' ),
        \'next_text\'          => __( \'Next page\', \'toivo-lite\' ),
        \'before_page_number\' => \'<span class="meta-nav screen-reader-text">\' . __( \'Page\', \'toivo-lite\' ) . \' </span>\',
        ) );
        ?>

    <?php else : ?>

        <?php get_template_part( \'content\', \'none\' ); ?>

    <?php endif; ?>

    <?php do_action( \'toivo_after_loop\' ); // Action hook after loop. ?>

    <?php get_footer(); ?>

我已替换：

    get_template_part( \'content\', ( post_type_supports( get_post_type(), \'post-formats\' ) ? get_post_format() : get_post_type() ) );

使用：

    wp_trim_words( the_content(), $num_words = 50, $more = \'...\' );

有人可能会告诉我这是错误的方法，但它可能会帮助你。它将显示内容的前50个单词，并带有“…”跟随它。