Ron's ESL Blogs http://rong-chang.com/blogs For both ESL/EFL teachers to discuss English language learning issues and answer students' questions. Mon, 06 Sep 2010 05:46:11 +0000 http://backend.userland.com/rss092 en To use “a” or “an” http://rong-chang.com/blogs/?p=406 When the past tense does not express the past time http://rong-chang.com/blogs/?p=396 The small snails with coconut http://rong-chang.com/blogs/?p=366 The present continuous tense is often used to express the future. http://rong-chang.com/blogs/?p=393 About “Ago” http://rong-chang.com/blogs/?p=375