ACT English: Master Capitalization Rules for Proper Nouns and Titles

Capitalize: Proper nouns (specific names of people, places, things): Sarah, Paris, Amazon River. Titles before names: President Biden, Dr. Smith (but "the president" or "the doctor" in lowercase). Days, months: Monday, March (but "season" words like "summer" are lowercase). Organizations and brand names: Microsoft, Red Cross. Titles of works: "The Great Gatsby" (capitalize first, last, and all major words). Do not capitalize: Common nouns even if they're important: city, river, country. Words after "the" in titles unless they're proper nouns: "the United States" (capitalize both), but "The man in the hat" (capitalize only the and "the" if starting a sentence). Seasons: spring, winter. These rules cover 95% of capitalization questions on ACT English; learn them and you'll answer most capitalization questions confidently.

Example: "I visited the Grand Canyon in Colorado last summer." Correct capitals: Grand Canyon (proper name of place), Colorado (state name). Summer is lowercase because it's not a proper noun. Compare: "I visited the grand canyon in colorado last Summer" (wrong; lowercase the proper nouns and capitalize a season). The difference is clear once you know the rules.

Trap 1: Over-capitalizing important words. "The Mayor announced a New Initiative" looks formal, but it's wrong. Only "Mayor" should be capitalized if it precedes the name (Mayor Johnson); otherwise, "mayor" is lowercase. Similarly, "Initiative" shouldn't be capitalized unless it's part of a proper name. Trap 2: Confusing job titles with formal titles. "I met with Professor Smith in her office" (capitalize "Professor" before her name). But: "I met with a professor in her office" (lowercase "professor" as a common noun). Ask: "Is this a proper noun (specific name) or a common noun (general category)?" Proper nouns are capitalized; common nouns are not.

When you see a capitalization error, check: Is this a proper noun that should be capitalized, or a common noun that shouldn't? Is this a title before a name (capitalize) or a title used alone (lowercase)? These two questions resolve most capitalization confusion.

Sentence 1: "Sarah met with the President in the oval Office." Error: "office" shouldn't be capitalized; "Oval Office" is the proper name, but "office" alone is lowercase. Fix: "Sarah met with the president in the oval office." (Also, "president" without a name is lowercase.) Sentence 2: "I read 'the catcher in the rye' by J.D. Salinger." Error: In title, capitalize "The," "Catcher," and "Rye." Fix: "I read 'The Catcher in the Rye' by J.D. Salinger." Sentence 3: "The Company's new project begins on Monday in the Spring." Error: "Spring" is lowercase when it's not part of a proper noun; "Company" is lowercase unless it's the official name. Fix: "The company's new project begins on Monday in the spring." Sentence 4: "She works for the United States government as a Diplomat." Error: "Diplomat" is lowercase unless it precedes a name. Fix: "She works for the United States government as a diplomat." Each error illustrates a common mistake; fixing them cements the rules.

Do this drill daily for one week and capitalization will become automatic. By test day, you'll spot capitalization errors instantly and correct them confidently.

Capitalization questions appear regularly on ACT English and are among the most straightforward to get right because the rules are clear and consistent. Unlike some grammar rules that feel ambiguous, capitalization has definite right and wrong answers; once you know the rules, you solve these questions with near-perfect accuracy.

This week, focus on learning and drilling the five main capitalization rules. By test day, you'll answer capitalization questions in 10-15 seconds and move on, freeing time for more complex grammar topics.