SAT / PSAT: SAT PSAT Reading Writing - Standard English Conventions, Punctuation, Apostrophes, Possessive vs Contraction vs Plural

What Is This?

Apostrophes are punctuation marks used to indicate possession, contraction, or the omission of letters or numbers. This topic appears in exams to test your understanding of when and how to use apostrophes correctly in different contexts. Questions typically involve identifying correct usage or correcting incorrect usage in sentences.

Why It Matters

Apostrophes are tested in various standardized exams like the SAT, ACT, and GRE, as well as in job-related tests for roles requiring strong English skills. They appear frequently and can carry significant marks. Mastering apostrophes demonstrates your ability to communicate clearly and precisely in written English.

Core Concepts

• Possessive Apostrophes: Used to show ownership.
• Contraction Apostrophes: Used to combine words or omit letters.
• Plural Forms: Do not use apostrophes unless forming a possessive plural.
• Distinctions: Understand the difference between "its" (possessive) and "it's" (contraction).
• Edge Cases: Special rules for names ending in 's' and compound nouns.

Prerequisites

• Basic understanding of nouns and pronouns.
• Familiarity with contractions (e.g., don't, won't).
• Knowledge of plural forms of nouns.

The Rule-Book (How It Works)

Primary Rule

Use an apostrophe to show possession or to form contractions.

Sub-rules and Exceptions

• Possessive: Add 's to singular nouns and plural nouns not ending in 's'. For plural nouns ending in 's', add only an apostrophe.
• Singular: The dog's bone.
• Plural not ending in 's': The children's toys.
• Plural ending in 's': The cats' food.
• Contraction: Use an apostrophe to replace omitted letters.
• Contraction: It's raining. (it is)
• Plural: Do not use an apostrophe to form plurals.
• Correct: The apples are ripe.
• Incorrect: The apple's are ripe.
• Edge Cases:
• Names ending in 's': Add 's or just an apostrophe.
  • James's book or James' book.
• Compound nouns: The last word takes the apostrophe.
  • Mother-in-law's house.

Visual Pattern

• Possessive: noun + 's
• Contraction: it + 's = it's
• Plural: noun + s (no apostrophe)

Exam / Job / Audit Weighting

• Frequency: High
• Difficulty Rating: Intermediate
• Question Type: Multiple Choice, Sentence Correction, Fill-in-the-Blank

Difficulty Level

Intermediate

Must-Know Rules, Formulas, Standards, or Principles

1. Possessive Rule: Add 's to singular nouns and plural nouns not ending in 's'. Add only an apostrophe to plural nouns ending in 's'.
2. Contraction Rule: Use an apostrophe to replace omitted letters in contractions.
3. Plural Rule: Do not use an apostrophe to form plurals unless forming a possessive plural.

Worked Examples (Step-by-Step)

Easy

Question: Choose the correct form: The boy's / boys / boys' books are on the table. Reasoning:
1. Identify the noun: boys.
2. Determine if it's possessive: Yes, the books belong to the boys.
3. Apply the possessive rule: boys' (plural noun ending in 's'). Answer: boys'

Medium

Question: Correct the sentence: Its been a long day. Reasoning:
1. Identify the contraction: Its (it is).
2. Apply the contraction rule: it's. Answer: It's been a long day.

Hard

Question: Correct the sentence: The Smith's are coming to dinner. Reasoning:
1. Identify the noun: Smith (family name).
2. Determine if it's plural: Yes, the Smith family.
3. Apply the plural rule: Smiths (no apostrophe). Answer: The Smiths are coming to dinner.

Common Exam Traps & Mistakes

1. Mistake: Using "it's" for possession.
2. Wrong: The dog lost it's bone.
3. Correct: The dog lost its bone.
4. Mistake: Adding an apostrophe to form plurals.
5. Wrong: The apple's are ripe.
6. Correct: The apples are ripe.
7. Mistake: Incorrect possessive for names ending in 's'.
8. Wrong: James' book.
9. Correct: James's book or James' book.
10. Mistake: Incorrect possessive for compound nouns.
11. Wrong: My mother-in-law's house.
12. Correct: My mother-in-law's house.

Shortcut Strategies & Exam Hacks

• Memory Aid: "It's" always means "it is" or "it has".
• Elimination Strategy: If a sentence uses "it's" for possession, it's wrong.
• Pattern Recognition: Look for nouns ending in 's' and apply the possessive rule.

Question-Type Taxonomy

1. Multiple Choice: Choose the correct form.
2. Example: The dog's / dogs / dogs' bones are buried in the yard.
3. Favored by: SAT, ACT
4. Sentence Correction: Correct the incorrect usage.
5. Example: Its been a long day.
6. Favored by: GRE, TOEFL
7. Fill-in-the-Blank: Insert the correct apostrophe form.
8. Example: The _ books are on the table.
9. Favored by: Job-related tests

Practice Set (MCQs)

1. Question: The cat's / cats / cats' toys are scattered.
2. Options: A) cat's, B) cats, C) cats'
3. Correct Answer: C) cats'
4. Explanation: Plural noun ending in 's', possessive form.

5. Why the Distractors Are Tempting: A) looks like a singular possessive, B) looks like a simple plural.

6. Question: Its / It's been a long day.

7. Options: A) Its, B) It's
8. Correct Answer: B) It's
9. Explanation: Contraction of "it is".

10. Why the Distractors Are Tempting: A) looks like a possessive form.

11. Question: The Jones' / Jones's / Joneses house is for sale.

12. Options: A) Jones', B) Jones's, C) Joneses
13. Correct Answer: B) Jones's
14. Explanation: Possessive form for a name ending in 's'.

15. Why the Distractors Are Tempting: A) looks like a possessive, C) looks like a plural.

16. Question: The childrens' / children's toys are in the box.

17. Options: A) childrens', B) children's
18. Correct Answer: B) children's
19. Explanation: Possessive form for a plural noun not ending in 's'.

20. Why the Distractors Are Tempting: A) looks like a possessive form.

21. Question: The dog's / dogs / dogs' are playing in the park.

22. Options: A) dog's, B) dogs, C) dogs'
23. Correct Answer: B) dogs
24. Explanation: Simple plural form.
25. Why the Distractors Are Tempting: A) looks like a singular possessive, C) looks like a possessive plural.

30-Second Cheat Sheet

• Possessive: noun + 's (singular), nouns' (plural ending in 's')
• Contraction: it's = it is or it has
• Plural: noun + s (no apostrophe)
• Names ending in 's': name's or name'
• Compound nouns: last word + 's

Learning Path

1. Beginner Foundation: Review basic nouns, pronouns, and contractions.
2. Core Rules: Learn the primary rule and sub-rules for apostrophes.
3. Practice: Work through examples and practice sets.
4. Timed Drills: Solve questions under exam conditions.
5. Mock Tests: Take full-length practice exams.

Related Topics

1. Commas: Often tested alongside apostrophes in sentence structure questions.
2. Semicolons and Colons: Appear in advanced punctuation sections.
3. Subject-Verb Agreement: Understanding noun forms is crucial for both topics.