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📝 English and Language Usage · Conventions of Standard English · Lesson 4 of 6 · 4 min

Capitalization and end punctuation: proper nouns, titles, periods

🔠 Capital letters signal names and beginnings. Most errors come from capitalizing words that only sound important.

💡 Key idea

Capitalize specific names and titles before names; an indirect question ends with a period.

🧠 The idea

Capitalize the first word of a sentence, the pronoun I, and PROPER NOUNS: specific people, places, organizations, days, months, holidays, languages and nationalities (Monday, July, Spanish).Do NOT capitalize seasons (spring), general directions (drive north) or common nouns used generally (a hospital, my doctor). Capitalize a direction when it names a region (the South). TITLES and family words are capitalized before a name or in place of one (Doctor Kim, Aunt Rosa, ask Mom) but not alone or after a possessive (a doctor, my mom). In titles of works, capitalize the first word, the last word and all important words; short articles, prepositions and conjunctions stay lowercase in the middle (The Call of the Wild). END PUNCTUATION: a period ends a statement or a polite command, a question mark ends a direct question, and an exclamation point shows strong feeling. An INDIRECT QUESTION is a statement and ends with a period: "She asked whether the lab was open."

✏️ Worked example

Correct this: "Last Spring my Aunt visited st. Luke's hospital in the south end of Denver and asked if visitors could park there?" Step 1: seasons are lowercase, so spring. Step 2: "my aunt" has no name after it, so lowercase aunt. Step 3: the full name of a specific hospital is a proper noun: St. Luke's Hospital. Step 4: "south end" is a general part of the city here, so lowercase. Step 5: "asked if visitors could park" is an indirect question, so end with a period.

📌 Takeaways

  • Seasons and general directions are lowercase; months, days and regions are capitalized.
  • Capitalize a title right before a name, not when it stands alone.
  • An indirect question ("asked if...") ends with a period.

✅ Check yourself

Question 1 of 3

Which sentence is capitalized correctly?

  1. We visited my grandmother in the Fall.
  2. Last spring we drove to Lake Tahoe.
  3. My Doctor has an office on Elm street.
  4. We celebrate thanksgiving in November.
Show the answer and rationale

Answer: B

Seasons such as spring are lowercase, and Lake Tahoe is the name of a specific place, so it is capitalized. The other choices capitalize a season (Fall) or a common noun (Doctor), or lowercase parts of proper nouns (Elm Street, Thanksgiving).

Question 2 of 3

Which sentence has correct end punctuation?

  1. The patient asked when lunch would arrive.
  2. Did you sign the consent form.
  3. Will the lab results be ready today.
  4. The patient asked when lunch would arrive?
Show the answer and rationale

Answer: A

"Asked when lunch would arrive" reports a question indirectly, so it is a statement and takes a period. The other two direct questions need question marks, and the indirect question with a question mark is wrong.

Question 3 of 3

Which book title is capitalized correctly?

  1. a Year on the River
  2. Notes on a Small Town
  3. The Garden In Winter
  4. Stories Of the Old West
Show the answer and rationale

Answer: B

Title case capitalizes the first word, the last word and important words, while short prepositions and articles such as "on" and "a" stay lowercase in the middle. "In" and "Of" should be lowercase, and the first word "a" must be capitalized.

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