我在Wordpress中使用bones样板主题，在主页上显示了一个包含Wordpress中最近三篇帖子的三列的部分。

bones主题使用响应性960网格，在任何网格使用中，我们都需要添加first 到第一个元素和last 到最后一个元素。我已经尝试从this answer 在他们的支持论坛上。

以下是当前使用的代码：-

<section class="home-section clearfix" id="what-we-say">
    <div class="wrap">
        <hgroup class=""><h2>What We Say</h2></hgroup>
        <div id="blog-posts">
            <?php
            $temp = $wp_query; $wp_query= null;
            $wp_query = new WP_Query(); $wp_query->query(\'showposts=3\' . \'&paged=\'.$paged);
            while ($wp_query->have_posts()) : $wp_query->the_post(); ?>
            <?php $counter = 1; //counter tracks the number of the post we\'re on ?>

            <?php // This code uses the modulus operator to check the remainder of the $counter value in the current iteration and adds the \'first\' or \'last\' class based on either number sequence ?>

            <li class="blog-post fourcol <?php if ($counter % 3 == 0) { echo \'last\';} elseif ($counter % 3 == 1) { echo \'first\';} ?>"> 
                <article id="post-<?php the_ID(); ?>" <?php post_class( \'clearfix\' ); ?> role="article" itemscope itemtype="http://schema.org/BlogPosting">
                <header class="article-header">
                    <h3><a href="<?php the_permalink(); ?>" title="Read more"><?php the_title(); ?></a></h3>
                    <p class="byline vcard"><?php printf( __( \'Posted <time class="updated" datetime="%1$s" pubdate>%2$s</time> by <span class="author">%3$s</span>.\', \'bonestheme\' ), get_the_time( \'Y-m-j\' ), get_the_time( __( \'F jS, Y\', \'bonestheme\' ) ), bones_get_the_author_posts_link() ); ?></p>
                </header>
                <section class="entry-content clearfix" itemprop="articleBody">
                    <?php the_excerpt(); ?>
                </section>
                <footer class="article-footer">
                    <p class="clearfix"><?php the_tags( \'<span class="tags">\' . __( \'Tags:\', \'bonestheme\' ) . \'</span> \', \', \', \'\' ); ?></p>
                </footer>
            </li>
            <?php $counter++; // This increases the value of $counter by 1 for every loop iteration ?>
            <?php endwhile; ?>

            <?php if ($paged > 1) { ?>

            <nav id="nav-posts">
                <div class="prev"><?php next_posts_link(\'&laquo; Previous Posts\'); ?></div>
                <div class="next"><?php previous_posts_link(\'Newer Posts &raquo;\'); ?></div>
            </nav>

            <?php } else { ?>

            <nav id="nav-posts">
                <div class="prev"><?php next_posts_link(\'&laquo; Previous Posts\'); ?></div>
            </nav>

            <?php } ?>

            <?php wp_reset_postdata(); ?>
        </div>
    </div>
</section>

有人能从上面看出为什么我的代码不能按预期工作吗？提前谢谢。