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Grammar
General
- Go to the grammar section: there are lessons and exercises on many topics
http://www.soundguideweb.com/spip.php?rubrique36
- Many grammar points listed in alphabetical order: it leads to different websites with lessons and online exercises.
http://www.michellehenry.fr/gram.htm
Specific points
http://learnenglish.britishcouncil.org/en/english-grammar
http://www.eslflow.com/Index.html
Irregular Verbs.
Lists:
http://www.verbes-irreguliers-anglais.fr://www.verbes-irreguliers-anglais.fr
Avec audio
Interactive online exercises
http://www.englisch-hilfen.de/en/exercises_list/verbs.htm
https://www.ego4u.com/en/cram-up/grammar/irregular-verbs/exercise
http://www.englishpage.com/irregularverbs/interactiveirregularverbs1.htm