University of Texas at Austin
Tex's French Grammar: Definite Articles
This site from Tex's French Grammar is a wonderful site, with very clear explanation of definite articles and the different usages - Includes written and audio examples and has interactive practice exercises.
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Bob's Byway: Glossary of Poetic Terms
Calling itself "unique," Bob's is easy to use, with cross-links throughout, phonetic pronunciation guides when necessary, and many examples and quotations. Click on the letter and scroll for the word.