Fiveable SAT Writing and Language: Deep Dive into Conventions of Punctuation

Conventions of Punctuation is one of the core tested areas in the SAT Writing and Language section. These questions ask you to fix or confirm punctuation choices in a passage, and they show up consistently on every test. The rules here are learnable and predictable, so knowing them well is one of the fastest ways to pick up points.

🦋 SAT Writing and Language: Punctuation

The SAT tests six punctuation rule areas. Each one comes up regularly, so treat all six as must-know material.

🔚 End-of-Sentence Punctuation

🌰 What the College Board says: Using the correct form of ending punctuation (period, question mark, or exclamation point) when the context makes the writer's intent clear

⭐ What It Basically Means: Choose the ending punctuation (., ?, !) that matches the writer's purpose.

🤔 What You Need to Remember:

• If the sentence makes a statement or declaration, end it with a period (.).
  • Ex. Archaeologists may have yet to uncover all of the Earth's wonders, but there is always room for inquiry after every expedition.
  • Ex. There are exactly 7,641 islands in the Philippine archipelago.
• If the sentence is interrogative (asks a question, including rhetorical ones), end it with a question mark (?).
  • Ex. One may wonder, what lies beyond life and death?
  • Ex. How does one reconcile the differences between fact and fiction?
• If the sentence conveys strong emotion or urgency, end it with an exclamation point (!).
  • Ex. It's raining cats and dogs!
  • Ex. Today is a huge win for mankind!

These questions are rare on the SAT, but when they appear, they're free points if you read for the writer's tone.

🧰 Within-Sentence Punctuation

🌰 What the College Board says: Correctly using and recognizing and correcting misuses of colons, semicolons, and dashes

⭐ What It Basically Means: Know when to use commas, semicolons, colons, and dashes inside a sentence. This is the most heavily tested punctuation area.

🤔 What You Need to Remember:

Semicolons (;) join two independent clauses (complete sentences that could stand alone).

• Ex. The Sentinelese are among the last groups of people that remain isolated from the modern world**;** they vigorously reject all forms of contact with outsiders.
  • Both halves are independent clauses. The semicolon connects them without a conjunction.

Commas (,) have several distinct jobs:

1. After an introductory dependent clause or phrase:

   • Ex. Even though everyone was hungry**,** they chose to eat outside Disneyland to save money.
   • Ex. Saddened to see their beloved principal retire**,** the seniors pulled an elaborate prank on the entire administrative staff.
   • The dependent clause comes first, then a comma, then the independent clause.

2. Separating items in a list:

   • WRONG: I love cows; pigs; and sheep.
   • CORRECT: I love cows**,** pigs**,** and sheep.

3. Setting off nonessential (supplementary) information:

   • WRONG: Aladdin an animated musical fantasy comedy film was first released almost 30 years ago.
   • CORRECT: Aladdin**,** an animated musical fantasy comedy film**,** was first released almost 30 years ago.
   • The phrase "an animated musical fantasy comedy film" adds detail but isn't needed to identify the subject. Commas set it apart.

❗ Sample Question: Percy Jackson and the Olympians____; a Greek mythology young adult series by the illustrious Rick Riordan, was a complete hit.

(A) NO CHANGE

(B) Percy Jackson and the Olympians; a Greek mythology young adult series by the illustrious Rick Riordan; was a complete hit.

(C) Percy Jackson and the Olympians, a Greek mythology young adult series by the illustrious Rick Riordan, was a complete hit.

(D) Percy Jackson and the Olympians a Greek mythology young adult series by the illustrious Rick Riordan was a complete hit.

ANSWER: (C). The phrase "a Greek mythology young adult series by the illustrious Rick Riordan" is nonessential information, not an independent clause, so semicolons are wrong. That eliminates (A) and (B). Choice (B) also fails the consistency test: you can't mix a comma and a semicolon around the same parenthetical phrase. Choice (D) has no punctuation at all, making the sentence unreadable. (C) correctly uses matching commas around the nonessential phrase.

1. Only around truly nonessential information. If removing the phrase would make the sentence incomplete or change its meaning, skip the commas.

   • WRONG: Sitting on the bleachers is artist**,** Bob Ross**,** as the game goes on.
   • CORRECT: Sitting on the bleachers is artist Bob Ross as the game goes on.
   • "Bob Ross" is essential here. Without it, you don't know which artist. No commas needed.

2. Setting off transition words and transitional phrases:

   • WRONG: The cat enjoys playing fetch; the dog however hates the outdoors.
   • CORRECT: The cat enjoys playing fetch; the dog**,** however**,** hates the outdoors.
   • ALSO CORRECT: The cat enjoys playing fetch; however**,** the dog hates the outdoors.
   • Words like "however," "therefore," and "moreover" need commas around them when they interrupt a clause. Notice the semicolon still separates the two independent clauses.

Colons (:) come after an independent clause to introduce a list, a clarifying statement, or a quotation.

• Ex. Terry posted his bucket list of must-eats on Facebook**:** M&M smores, pigs-in-a-blanket, and calzones.
• Ex. The valedictorian wrapped up his speech with an iconic ending**:** "Shoot for the stars and land on the moon."
• Ex. Jamestown is a quaint little town**:** people enjoy visiting the local railway museum every now and then.
  • That last example could also use a semicolon (since both sides are independent clauses), but never a comma alone.

Dashes separate phrases and clauses that interrupt the sentence with additional detail, just like commas do for nonessential information.

• One dash if the extra detail comes at the end of the sentence:
  • Ex. All our goods are manufactured in China**—**the industrial powerhouse of East Asia.
  • Ex. I enjoy traveling because you get to meet an eclectic bunch of people across the world**—**tourists, locals, and everyone in between.
• Two dashes if the extra detail falls in the middle of the sentence:
  • Ex. My dream is to visit each of the American states**—all 50 of them—**and drive from coast to coast.
  • Ex. It is quite interesting to find out that my theatre professor**—a retired black belt holder—**was able to fend off an intruder at night.

👻 Possessive Nouns and Pronouns

🌰 What the College Board says: Recognizing and correcting inappropriate uses of possessive nouns and pronouns and deciding between plural and possessive forms

⭐ What It Basically Means: The SAT will test whether you can tell the difference between plural nouns (more than one) and possessive nouns (showing ownership). The apostrophe placement is the key.

🤔 What You Need to Remember:

• Plural form (no apostrophe): Usually followed by a verb. The noun is just "more than one" of something.
  • WRONG: Cows' use their spots to attract potential mates.
  • CORRECT: Cows use their spots to attract potential mates.
• Possessive form (apostrophe + s, or s + apostrophe for plural possessives): Usually followed by a noun that belongs to the subject.
  • WRONG: My cats toy is worn out and unrecognizable.
  • CORRECT: My cat's toy is worn out and unrecognizable.
• Plural in a prepositional phrase (no apostrophe): When the noun is part of a "of ___" phrase or isn't showing ownership.
  • WRONG: The groups' of tourists have wandered aimlessly around Disneyland.
  • CORRECT: The groups of tourists have wandered aimlessly around Disneyland.

A quick test: ask yourself, "Does this noun own something in the sentence?" If yes, it needs an apostrophe. If it's just more than one, no apostrophe.

🌈 Items in a Series

🌰 What the College Board says: Using commas and sometimes semicolons to separate elements in lists

⭐ What It Basically Means: When you list items, keep your punctuation consistent throughout the list.

🤔 What You Need to Remember:

• You CANNOT mix commas and semicolons in the same list. Pick one and stick with it.
  • WRONG: Hyrum went bobsledding**;** found a grizzly bear, and ate smores.
  • CORRECT: Hyrum went bobsledding**,** found a grizzly bear**,** and ate smores.
• The exception: When list items already contain commas (most commonly city-country or city-state pairs), use semicolons to separate the items so the reader can tell them apart.
  • WRONG: My top three favorite places are Jeju, South Korea, Bali, Indonesia, and Seattle, United States.
  • CORRECT: My top three favorite places are Jeju, South Korea**;** Bali, Indonesia**;** and Seattle, United States.

⛔ Nonrestrictive and Parenthetical Elements

🌰 What the College Board says: Using punctuation to set off nonessential sentence elements and recognizing and correcting cases in which punctuation is wrongly used to set off essential sentence elements

⭐ What It Basically Means: When you set off a nonessential phrase, the punctuation on both sides must match. Don't start with a comma and end with a dash (or leave one side unpunctuated).

🤔 What You Need to Remember:

• Don't mix punctuation types around the same nonessential phrase.
  • WRONG: Game of Thrones**,** the most brutal and graphic show I have ever watched**—**turned out to be an interesting watch.
  • CORRECT: Game of Thrones**,** the most brutal and graphic show I have ever watched**,** turned out to be an interesting watch.
• Watch for sentences that are missing punctuation on one side of the phrase. If a nonessential element sits in the middle of a sentence, it needs punctuation on both ends.
  • WRONG: The Boston Symphony a world-renowned orchestra**—**played Tchaikovsky's 1812 Overture.
  • CORRECT: The Boston Symphony**—a world-renowned orchestra—**played Tchaikovsky's 1812 Overture.

🤦‍♂️ Unnecessary Punctuation

🌰 What the College Board says: Recognizing and eliminating unneeded punctuation

⭐ What It Basically Means: Sometimes the correct answer is simply removing punctuation that doesn't belong. If a comma, semicolon, or colon interrupts the natural flow of a sentence, it should go.

🤔 What You Need to Remember:

Try reading the sentence out loud. If a pause caused by punctuation feels forced or awkward, that punctuation probably shouldn't be there.

• No comma between a verb and its object/complement:
  • WRONG: It is necessary to wear your helmets**,** while riding the safari van.
  • CORRECT: It is necessary to wear your helmets while riding the safari van.
• No colon when the list flows directly from the verb or preposition:
  • WRONG: Mr. Hemsworth told us to make revisions**:** with effort, patience, and dedication.
  • CORRECT: Mr. Hemsworth told us to make revisions with effort, patience, and dedication.
  • A colon needs a complete independent clause before it. "Told us to make revisions" leads directly into "with effort..." so no colon is needed.
• "However" between two independent clauses needs a semicolon before it, not just commas:
  • WRONG: California is home to multiple tourist attractions**,** however**,** it also is a hub for deadly wildfires.
  • CORRECT: California is home to multiple tourist attractions**;** however**,** it also is a hub for deadly wildfires.
• No semicolon before a dependent phrase:
  • WRONG: Mordecai told Twilight Sparkle about the beauty of airplanes in the night sky**;** expressing it through a heartfelt song.
  • CORRECT: Mordecai told Twilight Sparkle about the beauty of airplanes in the night sky**,** expressing it through a heartfelt song.
  • "Expressing it through a heartfelt song" is a participial phrase, not an independent clause. A semicolon can only join independent clauses.

🤓 SAT Punctuation: Conclusion

That covers all six punctuation rule areas tested on the SAT. You don't need to memorize everything in one sitting. Focus on the areas where you're making the most mistakes, drill practice questions on those specific rules, and the patterns will start to click. Punctuation questions are some of the most predictable on the entire test, so the time you invest here pays off.