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Google speaks now: http://www.google.com/dictionary?q=envi ... 1&oi=spell

ENGLISH GRAMMAR:
EXPLANATIONS AND EXERCISES
by Mary Ansell
Second edition, copyright © 2000
http://www.fortunecity.com/bally/durrus ... amtoc.html


CHAPTER 6. THE PAST CONTINUOUS, THE PAST...

Article Usage
by John R. Kohl
http://www.rpi.edu/web/writingcenter/esl.html

Commas: http://englishplus.com/grammar/00000067.htm

Common Errors in English by Paul Brians
http://www.wsu.edu/~brians/errors/errors.txt

Guide to Grammar and Writing
In loving memory of Dr. Charles Darling - Founder of the Guide to Grammar and Writing


http://grammar.ccc.commnet.edu/grammar/

Questions and Answers
http://freerice.com/subjects.php?t=14410314832

The TOEFL Tests: http://www.testmagic.com/toefl/

Common Errors in English http://www.wsu.edu/~brians/errors/errors.html

Index to Grammar Materials http://web2.uvcs.uvic.ca/elc/studyzone/grammar.htm

330 Grammar Topics...

http://owl.english.purdue.edu/handouts/esl/

English Grammar and many exercises with answers

Englis Grammar Exercises. Questions and Answers.

http://www.philosoft.ru/_subsites/tcpor ... tr07_4.htm

Audio Tapes To Accompany
Accurate English: A Complete Course in Pronunciation
http://www.umass.edu/langctr/online/audio.html