English study (general) - web resources

http://learnerdictionary.com/pronex/pronex.htm Practising pronunciation

http://visual.merriam-webster.com/ Learning words from different topics by picture

http://www.curriculumassociates.com/professional-development/topics/Six-Traits-Writing/objectives.htm Six Traits of Writing

http://www.elllo.org/ Listening exercises at various levels—extra practise

http://web2.uvcs.uvic.ca/elc/studyzone/index.htm There are good reading exercises (by level)

http://owl.english.purdue.edu/owl/ OWL has some of the best grammar resources

http://owl.english.purdue.edu/owl/resource/678/01/ They also have some resources that specifically target ESL needs