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 54: Compound-Complex Sentences
Understanding Sentence Structures
A compound-complex sentence is a sophisticated sentence structure that joins two or more independent clauses and at least one dependent clause. This type of sentence allows writers to express multiple main ideas while also providing subordinate details, reasons, or conditions. It essentially combines the features of a compound sentence and a complex sentence into one.
Key Components:
- Independent Clause: A group of words that contains a subject and a verb and expresses a complete thought (e.g., Giovanna joined the marching band).
- Dependent Clause: A group of words that contains a subject and a verb but does not express a complete thought (e.g., who was more athletic).
Punctuation Patterns
Correct punctuation is vital. Use a comma before coordinating conjunctions (and, but, or, so) that join independent clauses. Usecommas to set off non-essential dependent clauses, such as those beginning withwho or which, or when a dependent clause starts the sentence.
Exercise 1: Identifying Independent Clauses
Underline the two independent clauses in each compound-complex sentence below.
- Giovanna joined the marching band, but Selma, who was more athletic, joined the basketball team.
- Giovanna thought that Selma was making a mistake, but Selma, who is usually indecisive, was sure of her decision.
- The girls were sad not to be in the same classes, but they both looked forward to new experiences because they spent alltheir time together.
- Since the school year started, the girlsbarely saw each other, and they missed their close friendship.
- They got together on weekends, and they talked about everything that came to mind.
- Giovanna and Selma supported each other, but they didn�t agree about all things, like which extra-curricular activity to join.
- Even though the girls didn�t see each other often, theyremained friends and they introduced one another to new people.
- Giovanna, who had joined the drum section, played the cadence at Selma�s basketball games, and the crowd loved it.

Exercise 2: Identifying Dependent Clauses
Circle the dependent clause in each sentence.
- Since they had so much fun at the party, Shan and Jason stayed late, but they were tired in the morning.
- After the dance began, we found our friends in the other room, and we invited them to stay with us.
- The friends, who often play in the yard, are outside, but they will soon come into the house.
- When we go to the library, I will read for an hour, and you can relax.
- Although I love strawberries and oranges, my brother will not eat fruit, and he loves cake.
- Unless they read several books, Sherry andAlia may not have enough information for research, and they will not be able towrite their papers.
- Mr. Bert sits in the garden that is located in his yard.
- If he neglects the shrubs, they become bushy and look messy.
Exercise 3: True or False
Read the statements about sentence structure. Write T for True or F for False.
- A compound-complex sentence must have at least three independent clauses. _____
- A dependent clause canstand alone as a sentence. _____
- A compound-complex sentence joins two or more independent clauses and one or more dependent clauses. _____
- You never need a comma in a compound-complex sentence. _____
- “Because our math class is challenging” is an exampleof an independent clause. _____
- Independent clauses in a compound-complex sentence are often joined by a coordinating conjunction like ‘and’ or ‘but’. _____
- A simple sentence contains one independent clause and one dependent clause. _____
- “Who was more athletic” is an example of a dependent clause. _____
Exercise 4: Sentence Components
Match the sentence part to its definition.
- Independent Clause
- Dependent Clause
- Compound Sentence
- Complex Sentence
- Compound-Complex Sentence
- Subordinating Conjunction
- Coordinating Conjunction
- Relative Pronoun
A. Joins two independent clauses (e.g., and, but).
B. A word like ‘who’ or ‘which’ that starts a dependent clause.
C. Expresses a complete thought.
D. Has oneindependent and at least one dependent clause.
E. Does not express a complete thought.
F. Contains two independent clauses and at least onedependent clause.
G. Contains two or more independent clauses.
H. A word like ‘because’ or ‘since’ that starts a dependent clause.

Exercise 5: Sentence Assembly
Combinethe ideas to form a compound-complex sentence.
- (The sun rose) + (The birds began to sing) + (When the morning came)
- (I wanted to go to the park) + (It was raining) + (Because the weather changed)
- (She studied hard) + (She passed the test) + (Although she was tired)
- (The dog barked) + (The mail carrierarrived) + (Who walks quickly)
- (We ate dinner) + (We watched a movie) + (After we finished cooking)
- (Tom plays soccer) + (He is the captain) + (Because he is skilled)
- (The car stopped) + (The driver got out) + (When the light turned red)
- (I like apples) + (My sister prefers bananas) + (While I eat fruit daily)
Exercise 6:Fill in the Blanks
Complete the compound-complex sentences with appropriate conjunctions or relative pronouns.
- ________ the movie ended, we went home, ________ we were all very tired.
- My friend, ________ lives in New York, visited me, ________ we went to the museum.
- I missed the bus, ________ I was late for school, ________ I woke up on time.
- The team wonthe game, ________ they practiced hard ________ the season started.
- ________ you finish your homework, you can watch TV, ________ you must clean your room first.
- The cake ________ my mom baked was delicious, ________ everyone asked for seconds.
- He ran fast, ________ he didn’t win the race ________ he tripped near the finish line.
- The book ________ I borrowed is interesting, ________ Ihaven’t finished it yet.