WP Blog page show excerpt if main page show entire post on single post page.
if ( is_home() ) {
the_excerpt();
} else {
the_content( sprintf(
/* translators: %s: Name of current post. */
wp_kses( __( 'Continue reading %s <span class="meta-nav">→</span>', 'shoreditch' ), array( 'span' => array( 'class' => array() ) ) ),
the_title( '<span class="screen-reader-text">"', '"</span>', false )
) );
}