4th Grade ELA Flashcards: Comma In Compound Sentences

What this deck covers

This deck focuses on Comma In Compound Sentences, giving you a quick way to review the definitions, rules, and examples that matter most for 4th Grade ELA.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: Find and correct the punctuation: "The dog barked but the mail carrier kept walking."

Answer: Correct: "The dog barked, but the mail carrier kept walking.". Two independent clauses require a comma before "but."

Flashcard 2: What is a coordinating conjunction?

Answer: A word that joins words, phrases, or independent clauses. Acts as a connector between equal grammatical elements.

Flashcard 3: What is the comma rule when FANBOYS joins two verbs with the same subject (not two clauses)?

Answer: Do not use a comma before the conjunction. A single subject with two verbs doesn't need a comma.

Flashcard 4: Which option correctly uses a comma before a coordinating conjunction? A) 'He sang but loudly.' B) 'He sang, but he was nervous.'

Answer: B) 'He sang, but he was nervous.'. B has two independent clauses; A lacks a verb after 'but'.

Flashcard 5: Find and correct the punctuation: 'The dog barked but the mail carrier kept walking.'

Answer: Correct: 'The dog barked, but the mail carrier kept walking.'. Two independent clauses need a comma before 'but'.

Flashcard 6: Find and correct the punctuation: 'The bell rang, and the class lined up.'

Answer: Correct as written: 'The bell rang, and the class lined up.'. The comma is correctly placed before 'and' joining two clauses.

Flashcard 7: What must be true on both sides of the conjunction for the comma rule to apply?

Answer: Both parts must be independent clauses (complete sentences). Only complete sentences on both sides need the comma.

Flashcard 8: Find and correct the punctuation: "I finished my homework and I watched a show."

Answer: Correct: "I finished my homework, and I watched a show.". Two complete sentences need a comma before "and."

Flashcard 9: What punctuation is incorrect here, and what is the correction: 'I was tired, and went to bed.'

Answer: Remove comma: 'I was tired and went to bed.'. 'Went to bed' shares subject 'I', so no comma needed.

Flashcard 10: Find and correct the punctuation: 'I finished my homework and I watched TV.'

Answer: Correct: 'I finished my homework, and I watched TV.'. Two independent clauses need a comma before 'and'.

Flashcard 11: Choose the correct sentence with proper comma use in a compound sentence.

Answer: "We can walk to school, or we can ride the bus.". Both parts are complete sentences joined by "or."

Flashcard 12: Find the two independent clauses: "The bell rang, and the class rushed outside."

Answer: "The bell rang" and "the class rushed outside.". Each can stand alone with subject and verb.

Flashcard 13: What is the punctuation rule for a compound sentence joined by a coordinating conjunction?

Answer: Use a comma before the coordinating conjunction. This separates two complete thoughts joined by FANBOYS.

Flashcard 14: Which option is a compound sentence? A) I laughed and smiled. B) I laughed, and I smiled.

Answer: B) I laughed, and I smiled. B has two independent clauses with proper punctuation.

Flashcard 15: Which option shows correct punctuation: A) I ran and I jumped. B) I ran, and I jumped.

Answer: B) I ran, and I jumped. Two independent clauses need a comma before 'and'.

Flashcard 16: What is a compound sentence?

Answer: Two independent clauses joined together in one sentence. Contains two complete thoughts that could each be separate sentences.

Flashcard 17: What are the seven coordinating conjunctions that can join two independent clauses?

Answer: For, And, Nor, But, Or, Yet, So (FANBOYS). These seven words connect equal parts of sentences.

Flashcard 18: Identify whether a comma is needed: 'I will read a book, or I will draw a picture.'

Answer: Yes; keep the comma before 'or'. Two independent clauses require a comma before 'or'.

Flashcard 19: What two parts must a sentence have to be a compound sentence needing a comma before FANBOYS?

Answer: Two independent clauses joined by a coordinating conjunction. Each clause must have its own subject and verb.

Flashcard 20: Which option correctly punctuates the compound sentence using "so"?

Answer: "It was late, so we went home.". Two complete sentences joined by "so" need a comma.

Flashcard 21: What is an independent clause in this skill (comma before coordinating conjunction)?

Answer: A complete thought that can stand alone as a sentence. It contains both a subject and a predicate.

Flashcard 22: Which option correctly joins two sentences? A) It was late, but we stayed. B) It was late but, we stayed.

Answer: A) It was late, but we stayed. Comma correctly placed before conjunction.

Flashcard 23: What punctuation is usually needed before a coordinating conjunction in a compound sentence?

Answer: A comma. Separates the two independent clauses for clarity.

Flashcard 24: Identify the coordinating conjunction in this sentence: "I wanted to play, but it started raining."

Answer: but. It shows contrast between wanting to play and the rain.

Flashcard 25: What does the acronym FANBOYS stand for in coordinating conjunctions?

Answer: For, And, Nor, But, Or, Yet, So. These seven words connect equal parts of compound sentences.

Flashcard 26: Identify the correct sentence: A) She sang, and danced. B) She sang and danced.

Answer: B) She sang and danced. No comma; 'danced' shares the subject 'She'.

Flashcard 27: Identify the coordinating conjunction that should have a comma before it: 'The sky was dark   we went inside.'

Answer: So (as in: 'The sky was dark, so we went inside.'). 'So' joins two independent clauses, requiring a comma.

Flashcard 28: Find and correct the punctuation: "The team cheered but the referee disagreed."

Answer: Correct: "The team cheered, but the referee disagreed.". Two independent clauses need a comma before "but."

Flashcard 29: Which punctuation mark is placed immediately before the coordinating conjunction in a compound sentence?

Answer: A comma. It separates the two independent clauses before the conjunction.

Flashcard 30: Identify whether a comma is needed: 'I will read a book or draw a picture.'

Answer: No; it is not two independent clauses. 'Draw a picture' lacks a subject, so it's not independent.

Flashcard 31: Choose the correct sentence: A) 'She likes art, and music.' B) 'She likes art and music.'

Answer: B) 'She likes art and music.'. No comma needed; 'music' is not an independent clause.

Flashcard 32: What is an independent clause?

Answer: A group of words that can stand alone as a sentence. Has a subject and verb, expressing a complete thought.

Flashcard 33: Identify the error: "We practiced, and for the game."

Answer: Remove the comma; the second part is not an independent clause. "For the game" lacks a subject and verb.

Flashcard 34: Choose the correct punctuation: 'We can take the bus   we can walk to school.'

Answer: Use a comma: 'We can take the bus, or we can walk to school.'. 'Or' joins two independent clauses, so use a comma.

Flashcard 35: Identify whether a comma is needed: "She packed her lunch and she filled her water bottle."

Answer: Yes; add a comma before "and.". Both parts can stand alone as complete sentences.

Flashcard 36: Find and correct the error: "The dog barked and, the cat hid."

Answer: The dog barked, and the cat hid. Comma goes before, not after, the conjunction.

Flashcard 37: Which sentence is a correct compound sentence with a comma before the conjunction "yet"?

Answer: "I was tired, yet I stayed awake to finish the book.". Both parts are complete sentences joined by "yet."

Flashcard 38: Identify the correct sentence: A) We looked for shells, but found none. B) We looked for shells but, found none.

Answer: A) We looked for shells, but found none. Comma correctly placed before 'but'.

Flashcard 39: Find and correct the punctuation: 'We could leave now, or wait until later.'

Answer: Correct: 'We could leave now or wait until later.'. 'Wait until later' shares the subject 'We', so no comma.

Flashcard 40: Identify whether a comma is needed: "She packed her lunch and water bottle."

Answer: No; it is a compound subject/object, not two independent clauses. "Water bottle" isn't a complete sentence by itself.

Flashcard 41: What is the punctuation rule for a compound sentence joined by a coordinating conjunction?

Answer: Use a comma before the coordinating conjunction joining two independent clauses. This rule prevents run-on sentences by separating complete thoughts.

Flashcard 42: Choose the sentence that needs a comma: A) I like apples and oranges. B) I like apples, and I like oranges.

Answer: B) I like apples, and I like oranges. A lists items; B has two independent clauses.

Flashcard 43: What are the seven coordinating conjunctions (FANBOYS)?

Answer: For, and, nor, but, or, yet, so. Remember with the acronym FANBOYS.

Flashcard 44: Find and correct the error: "I wanted to play but it started to rain."

Answer: I wanted to play, but it started to rain. Missing comma before 'but' joining two independent clauses.

Flashcard 45: Find and correct the error: "She packed her bag, and went to the car."

Answer: She packed her bag and went to the car. No comma; 'went to the car' shares subject 'She'.

Flashcard 46: Find and correct the punctuation: "He did not call, nor did he text."

Answer: Correct as written: "He did not call, nor did he text.". The comma correctly separates two independent clauses.

Flashcard 47: Which rule is correct for a compound sentence: comma before or after the coordinating conjunction?

Answer: Comma before the coordinating conjunction. The comma always precedes the conjunction.

Flashcard 48: Identify whether a comma is needed: 'She wanted to go, yet she stayed home.'

Answer: Yes; keep the comma before 'yet'. Two independent clauses require a comma before 'yet'.

Flashcard 49: What is an independent clause in a compound sentence?

Answer: A group of words that can stand alone as a complete sentence. It has a subject and verb expressing a complete thought.

Flashcard 50: What is the name of the mistake in: "I ran to the door, and opened it."

Answer: Unnecessary comma; the second part is not an independent clause. "Opened it" lacks a subject, so no comma is needed.

Flashcard 51: Find and correct the punctuation: "The sun set, but not before we took pictures."

Answer: Remove the comma: "The sun set but not before we took pictures.". "Not before we took pictures" can't stand alone.

Flashcard 52: Find and correct the punctuation: "I can read now or I can read later."

Answer: Correct: "I can read now, or I can read later.". Both parts are complete sentences needing separation.

Flashcard 53: Choose the correct sentence: A) 'We ran and we laughed.' B) 'We ran, and we laughed.'

Answer: B) 'We ran, and we laughed.'. Option B correctly uses a comma between two independent clauses.