Back Click on each link to view tips and tricks for each grammar skill. Sentences Sentences Subjects and Predicates Declarative and Interrogative Sentences Imperative and Exclamatory Sentences Compound and Complex Sentences Nouns Common and Proper Nouns Singular and Plural Nouns Irregular Plural Nouns Singular Possessive Nouns Plural Possessive Nouns Verbs Action and Linking Verbs Main and Helping Verbs Subject-Verb Agreement Past, Present, and Future Tenses Irregular Verbs Pronouns Singular and Plural Pronouns Subject and Object Pronouns Possessive Pronouns Commonly Confused Homophones It's / its Your / you're There / their / they're Two / too / to School House Rock - Conjunction Junction School House Rock - Unpack Your Adjectives School House Rock - Lolly, Lolly, Lolly, Get Your Adverbs Here School House Rock - Interjections! School House Rock - Pronouns- Rufus Xavier Sarsaparilla School House Rock - Verb: That's What's Happenin' School House Rock - A Noun Is A Person, Place Or Thing School House Rock - Busy Prepositions School House Rock - Subject and Predicate- The Tale of Mr. Morton Grammar Bytes! All Things Grammar IXL Grammar