Parts of Speech Articles Prefixes and Suffixes Root Words Word Forms Word Usage Synonyms and Antonyms Contextual Vocabulary Formal and Informal Languages Technical and Specialized Vocabulary Figurative Language Analogies Coordinating and Subordinating Conjunctions Prepositions Common Grammar Mistakes Subject-Verb Agreement Verb Tenses Primary Auxiliary Verbs Modal Auxiliary Verbs Compound Sentences Complex Sentences Sentence Types Simple Sentences Run-on Sentences Sentence Fragments Clauses Clauses Part 2 Types of Phrases Phrasal Verbs Modifiers Parallel Structure Punctuations