http://www.edufind.com/ENGLISH/grammar/INDEX.CFM

http://www.indonesiamatters.com/1690/improve-english/

http://www.ego4u.com/en/cram-up/writing

Writing sentences

http://depts.gallaudet.edu/englishworks/grammar/main/sentence.htm

Sentence types

http://faculty.washington.edu/marynell/grammar/senttype.html

http://www.class.uidaho.edu/adv_tech_wrt/resources/sentence_style/sentence_types.htm

Business

http://esl.about.com/od/writingstyle/English_Writing_Style_Sentence_Paragraph_and_Essay_Writing_Skills.htm

S-V agreement

http://classroom.jc-schools.net/la/activities/subjectpredicates.html

http://www.arts.uottawa.ca/writcent/hypergrammar/subjpred.html

Genres, Text Types, or Discourse Modes

http://findarticles.com/p/articles/mi_m2342/is_2_34/ai_68279076/

Expository

http://www.rachelsimon.com/wg_exposition.htm

http://www.stanford.edu/~arnetha/expowrite/info.html

Recount

http://www.lmpc.edu.au/resources/Science/research_projects/text_types/2_recount.html

http://www.halloenglish.web.id/recount/

Narrative

http://www.rscc.cc.tn.us/owl&writingcenter/OWL/Narration.html

http://www.thewritingsite.org/resources/genre/narrative.asp