Unit 1: Complete and Incomplete Sentences
Unit 2: Types of Sentences
Unit 3: Simple and Complete Subjects and Predicates
Unit 4: Common Nouns
Unit 5: Common and Proper Nouns
Unit 6: Plural Nouns
Unit 7: More Plural Nouns
Unit 8: Singular Possessive Nouns
Unit 9: Plural Possessive Nouns
Unit 10: Subject and Object Pronouns
Unit 11: Complete Sentences and End Punctuation Review
Unit 12: Common and Proper Nouns Review
Unit 13: Singular and Plural Nouns Review
Unit 14: Possessive Nouns Review
Unit 15: Subject and Object Pronouns Review
Unit 16: Action Verbs
Unit 17: Linking Verbs
Unit 18: Helping Verbs
Unit 19: Past, Present, and Future Tense Verbs
Unit 20: Perfect Tense Verbs
Unit 21: Irregular Verbs
Unit 22: Progressive Verbs
Unit 23: Transitive Verbs
Unit 24: Intransitive Verbs
Unit 25: Subject and Verb Agreement
Unit 26: Action Verbs Review
Unit 27: Linking and Helping Verbs Review
Unit 28: Verb Tenses Review
Unit 29: Verb Forms Review
Unit 30: Subject and Verb Agreement Review
Unit 31: Adjectives
Unit 32: Comparative and Superlative Adjectives
Unit 33: Irregular Comparative and Superlative Adjectives
Unit 34: Adverbs
Unit 35: More Adverbs
Unit 36: Adverbs without -ly
Unit 37: Synonyms
Unit 38: Antonyms
Unit 39: Homophones
Unit 40: Adjectives Review
Unit 41: Comparative and Superlative Adjectives Review
Unit 42: Adverbs Review
Unit 43: Synonyms and Antonyms Review
Unit 44: Homophones Review
Unit 45: Conjunctions
Unit 46: Compound Subjects
Unit 47: Compound Predicates
Unit 48: Prepositions and Prepositional Phrases
Unit 49: Dependent Clauses
Unit 50: Independent Clauses
Unit 51: Commas
Unit 52: Compound Sentences
Unit 53: Complex Sentences
Unit 54: Compound-Complex Sentences
Unit 55: Conjunctions Review
Unit 56: Compound Subjects and Compound Predicates Review
Unit 57: Prepositions and Prepositional Phrases Review
Unit 58: Dependent and Independent Clauses Review
Unit 59: Compound, Complex, and Compound-Complex Sentences Review
Unit 60: Appositives
Unit 61: More Uses for Commas
Unit 62: Quotation Marks
Unit 63: Contractions
Unit 64: Abbreviations
Unit 65: Semicolons
Unit 66: Colons
Unit 67: Word Usage: Sit or Set
Unit 68: Word Usage: Lie or Lay
Unit 69: Word Usage: Your or You’re
Unit 70: Appositives Review
Unit 71: Commas and Quotations Review
Unit 72: Contractions and Abbreviations Review
Unit 73: Colons and Semicolons Review
Unit 74: Word Usage Review
Unit 75: Interjections
Unit 76: Articles
Unit 77: Prefixes
Unit 78: Suffixes
Unit 79: More Prefixes
Unit 80: More Suffixes
Unit 81: Greek Root Words
Unit 82: Latin Root Words
Unit 83: Spelling Patterns and Exceptions
Unit 84: More Spelling Patterns and Exceptions
Unit 85: Negatives
Unit 86: Interjections and Articles Review
Unit 88: Suffixes Review
Unit 89: Greek and Latin Root Words Review
Unit 91: Negatives Review
Unit 92: Review of the Eight Parts of Speech
Unit 93: Applying Punctuation Knowledge
Unit 94: Applying Punctuation and Word Usage Knowledge
Unit 96: Adjectives, Adverbs, and Verb Tenses Review
Unit 97: Sentence Structure Review: Simple and Compound Sentences
Unit 98: Dependent Clauses and Sentence Structure
Unit 9: Plural Possessive Nouns
Understanding Plural Possessive Nouns
A plural possessive noun shows ownership by more than one person, animal, or thing. To form plural possessives, we follow two main rules based on how the plural noun is spelled.
- Rule 1: Plural nouns ending in -s. If a plural noun ends in -s (like girls, teachers, dogs), you simply add an apostrophe(‘) to the end. Do not add another s.
- Example: The room belonging to the sisters = The sisters’ room.
- Rule 2: Plural nouns not ending in -s. If a plural noun is irregular and does not end in -s (like children, men, mice), you add an apostrophe and an s (‘s).
- Example: The toys belonging to the children = The children’s toys.

Grammar Tip: Don’t Get Confused!
Do not confuse plural nouns (more than one) with plural possessive nouns (ownership). A plural noun usually hasno apostrophe. A possessive noun always has an apostrophe.
Wrong: The dog’s are barking. (This implies ownership but means plural).
Right: The dogs are barking. (Simple plural).
Right:The dogs’ collars are red. (Plural Possessive).
Rewrite the following phrases using a plural possessive noun. These plurals all end in -s.
- The uniforms that belong to the cheerleaders → The ________________ uniforms.
- The helmets that belong to the football players → The ________________ helmets.
- The horns that belong to the trumpeters → The ________________ horns.
- The nests that belong to the birds → The ________________ nests.
- The grades of the students→ The ________________ grades.
- The houses of the neighbors → The ________________ houses.
- The cars belonging to the teachers → The ________________ cars.
- The tails of the monkeys → The ________________ tails.
Write the possessive form for these irregular plural nouns. Remember to add ‘s.
- children → ________________
- men → ________________
- women → ________________
- people → ________________
- mice → ________________
- geese → ________________
- teeth → ________________
- oxen → ________________

Circle the correct word to complete each sentence.
- The (girls / girls’ / girl’s) soccer teamwon the championship. (Plural)
- We heard the (ponies / ponies’/ ponie’s) hooves on the pavement.
- The (mens’ / men’s / mens)choir sang beautifully.
- All the (foxes’ / foxs’ / foxes) denswere hidden in the forest.
- The (mice’s / mices’ / mice) cheese was gone.
- Please put the (babies / babies’ / babys’) bottles on the counter.
- The (buses / buses’ / bus’) engines were loud.
- (Lions / Lions’ / Lion’s) roars can be heard from far away.
Read the underlined word. Write P for Plural Noun (no ownership) orPP for Plural Possessive Noun (ownership).
- The instructors gave a test to theclass. ______
- The instructors’ answer keys were on thedesk. ______
- The waves crashed against the shore. ______
- The waves’ height frightened the swimmers. ______
- The libraries are closed on Sundays. ______
- The libraries’ books are being organized. ______
- The doctors held a meeting. ______
- The doctors’ coats are white. ______
Use the following plural possessive nouns in a completesentence.
- (sisters’) _______________________________________________________
- (players’) _______________________________________________________
- (women’s) _______________________________________________________
- (friends’) _______________________________________________________
- (cats’) __________________________________________________________
- (teachers’) ______________________________________________________
- (feet’s) _________________________________________________________
- (drivers’) _______________________________________________________
Change the “of” phrase into a possessive noun phrase.
- The tools of the carpenters → ________________________________
- The recipes of the chefs → ___________________________________
- The toys of the puppies → ___________________________________
- The ideas of the writers → ___________________________________
- Therights of the people → ___________________________________
- The antlers of the deer → ____________________________________
- The computers of the programmers → ___________________________
- The feathers of the turkeys → _________________________________