Grammar

Adverb Order
http://www.ihes.com/Sresource/Sstudy/adverborder.htmlHow to extend simple sentences by adding adverbials; where to put them and in what order.

The Collective Noun Page
http://www.ojohaven.com/collectives/Alphabetical listing of collective nouns. Amazing collection!

Common Errors in English
http://www-personal.umich.edu/~cellis/antagonym.htmlProfessor Paul Brians' page on the most common usage and spelling mistakes in English.

An Elementary Grammar
http://www.hiway.co.uk/~ei/intro.htmlEntire grammar book online.

Elements of Style, by William Strunk
http://www.columbia.edu/acis/bartleby/strunk/Online version of this classic text from 1918.

Eleven Rules of Grammar
http://www.concentric.net/~rag/writing.shtmlRules for avoiding some of the most common grammatical errors, created by Robert Giaquinta.

English Grammar Links for ESL Students
http://www.gl.umbc.edu/~kpokoy1/grammar1.htmGood selection of links from Karen M. Hartman of the University of Maryland, Baltimore County.

ESL Grammar Notes: Articles
http://www.fairnet.org/agencies/lca/grammar2.htmlExplanations and rules on using articles.

ESL Grammar Notes: Countable and Non-Countable Nouns
http://www.fairnet.org/agencies/lca/grammar1.htmlExplanations and rules on using countable and non-countable nouns.

ESL Grammar Notes: Verb Tenses
http://www.fairnet.org/agencies/lca/grammar3.htmlExplanations and rules on verb tenses.

ESL Help Center
http://www.pacificnet.net/~sperling/wwwboard2/wwwboard.htmlTwenty-four-hour help for ESL/EFL students from an international team of ESL/EFL teachers. Don't miss it!

Gender-free Pronoun FAQ
http://www.lumina.net/OLD/gfp/A general information source about gender-free alternatives to gendered pronouns, written by John Chao.

Grammar and Style Notes
http://www.english.upenn.edu/~jlynch/Grammar/Jack Lynch's grammar and style guide.

Grammar Help
http://www.hut.fi/~rvilmi/help/grammar_help/Hints, rules, and exercises on English grammar from Ruth Vilmi. Highly recommended!

The Grammar Lady
http://www.grammarlady.com/Help and advice from grammar expert Dr. Mary Newton Bruder.

Irregular Verbs in English
http://www.library.pitt.edu/~coops/verbs.htmlA study list of irregular verbs from Linda Cooper.

LinguaCenter's Grammar Safari
http://deil.lang.uiuc.edu/web.pages/grammarsafari.htmlA great place for students to gather real grammar examples found on the World Wide Web. Highly recommended!

On-line English Grammar
http://www.edunet.com/english/grammar/toc.htmlMagnificent resource by Anthony Hughes. Don't miss it!

The Present Perfect
http://www.ihes.com/Sresource/Sstudy/presentperfect.htmlThe present perfect simple and continuous tenses.

Sentence Structure: Simple Sentences
http://www.ihes.com/Sresource/Sstudy/simplesentence.htmlThe parts of a simple sentence and how to put them together.

Teaching Grammar
http://www.geocities.com/SiliconValley/2527/teachinggrammar.htmlColin Mahoney's excellent article on how to teach grammar to ESL/EFL students.