for instance, the post structure is one picture, then a lot of word
what should I do if I want the picture(not excerpt word) showed in the front page followed by "read more"?
I guess I should modify the
<?php bfa_excerpt( 55, ' ...' ); ?>
But I am not sure which I should use to replace this one

I am not native English speaker.
Thanks.

by the way, the picture is linked, not uploaded locally , will that be a problem?
also, it would be great if the size of the picture displayed on front page can be re-sized.

the easiest way would be to edit the post and put the <img....> in 'the excerpt' section of the editor - if you don't see this option, click on the 'Screen Options' tab up towards the top right of the window.

Next go to mto->Sub Templates->postformat.php and change the line

		<?php the_excerpt( 55, ' ...' ); ?>

to

		<?php bfa_excerpt( 55, ' ...' ); ?>

you may also want to get rid of the line

	<?php bfa_thumb( 620, 180, true, '<div class="thumb-shadow"><div class="post-thumb">', '</div></div>' ); ?>

thanks for the quick advice.