English Club
English Club: Learn English: Vocabulary: Word Classes and Word Forms
Links to information on different word forms including verbs, nouns, adjectives, adverbs, prepositions, interjections, prefixes, suffixes, contractions, and "wh" question words.
English Club
English Club: Learn English: Vocabulary: Word of the Day
Links to seventeen different word lists under the following categories: common words, verbs, nouns, adjectives, adverbs, prepositions, and interjections.