Powerpoint คำกริยา
http://elsd.ssru.ac.th/arun_su/pluginfile.php/108/mod_page/content/1/%E0%B8%84%E0%B8%B3%E0%B8%81%E0%B8%A3%E0%B8%B4%E0%B8%A2%E0%B8%B2.pptx