Verb tense: http://www.internet4classrooms.com/skill_builders/verb_study_language_arts_fourth_4th_grade.htm
http://www.spellingcity.com/verb-tenses.html
http://www.turtlediary.com/kids-games/ela/verbs.html
Syllables:
www.learninggamesforkids.com/vocabulary_games/syllables.html
http://www.spellingcity.com/syllables-segmenting.html
Adjectives:
http://www.turtlediary.com/kids-games/ela/adjectives.html
http://www.softschools.com/quizzes/grammar/adjective/quiz219.html
Synonyms/Antonyms:
http://www.abcya.com/synonyms_antonyms.htm
http://www.learninggamesforkids.com/vocabulary-games/antonyms/antonym-or-synonym.html
http://www.internet4classrooms.com/skill_builders/synonyms_language_arts_fourth_4th_grade.htm
Homophones:
http://www.learninggamesforkids.com/vocabulary_games/homophones-games.html
http://www.funbrain.com/whichword/
http://www.vocabulary.co.il/homophones/
http://www.spellingcity.com/verb-tenses.html
http://www.turtlediary.com/kids-games/ela/verbs.html
Syllables:
www.learninggamesforkids.com/vocabulary_games/syllables.html
http://www.spellingcity.com/syllables-segmenting.html
Adjectives:
http://www.turtlediary.com/kids-games/ela/adjectives.html
http://www.softschools.com/quizzes/grammar/adjective/quiz219.html
Synonyms/Antonyms:
http://www.abcya.com/synonyms_antonyms.htm
http://www.learninggamesforkids.com/vocabulary-games/antonyms/antonym-or-synonym.html
http://www.internet4classrooms.com/skill_builders/synonyms_language_arts_fourth_4th_grade.htm
Homophones:
http://www.learninggamesforkids.com/vocabulary_games/homophones-games.html
http://www.funbrain.com/whichword/
http://www.vocabulary.co.il/homophones/