Capitalization and Punctuation
Grade 4 · English · Study Guide
Master the rules of capitalization and punctuation to write clearly and correctly.
Capitalization and punctuation are the traffic signals of writing. They tell readers when to stop, when to slow down, and what is important. Without them, writing would be very confusing to read!
Capitalization rules tell you when to use a capital (uppercase) letter. Always capitalize: the first word of a sentence, proper nouns (names of specific people, places, and things), the pronoun 'I,' the first word in a direct quote, titles of books and movies, and days of the week and months of the year. Common nouns (like 'city' or 'dog') are NOT capitalized unless they start a sentence.
Punctuation marks signal to the reader how to read a sentence. A period (.) ends a statement. A question mark (?) ends a question. An exclamation mark (!) shows excitement or strong emotion. A comma (,) is used to separate items in a list, after introductory words, and between parts of a compound sentence. Quotation marks (' ') set off the exact words someone says.
Apostrophes have two jobs: they show possession (the dog's leash means the leash belonging to the dog) and they form contractions (can't = cannot, it's = it is). Be careful with 'its' vs 'it's' — 'its' shows possession and has NO apostrophe!
Colons (:) are used to introduce a list. Semicolons (;) connect two closely related independent clauses. At 4th grade, focus mainly on periods, commas, question marks, exclamation marks, apostrophes, and quotation marks.
| Mark | Name | Use | Example |
|---|---|---|---|
| . | Period | End a statement | I love to read. |
| ? | Question mark | End a question | Do you like dogs? |
| ! | Exclamation mark | Show excitement | Watch out! |
| , | Comma | Separate items or clauses | I have cats, dogs, and fish. |
| ' | Apostrophe | Contractions and possession | It's the dog's bowl. |
Key terms
- Proper noun
- A specific name of a person, place, or thing that is always capitalized (New York, Monday, Sarah)
- Common noun
- A general name for a person, place, or thing — NOT capitalized (city, day, girl)
- Contraction
- Two words joined with an apostrophe replacing missing letters (can't = cannot)
- Apostrophe
- A punctuation mark (') used in contractions and to show possession
- Quotation marks
- Marks (' ') placed around the exact words someone speaks
Flashcards
- Proper Noun
- The name of a specific person, place, or thing — always capitalized: London, Tuesday, Emma
- Common Noun
- A general name — NOT capitalized: city, day, girl
- Period (.)
- Ends a statement: 'The sky is blue.'
- Question Mark (?)
- Ends a question: 'What time is it?'
- Exclamation Mark (!)
- Shows strong emotion or excitement: 'Surprise!'
- Comma (,)
- Separates items in a list or joins clauses: 'I like cats, dogs, and fish.'
Practice questions
Which word should be capitalized in the sentence: 'my friend lives in chicago'?
- friend
- lives
- chicago
- Both 'my' and 'chicago'
Show answer
Answer: Both 'my' and 'chicago'
'My' starts the sentence so it needs a capital M, and 'Chicago' is a proper noun (specific city) so it's always capitalized.
A question mark is used at the end of a sentence that shows strong emotion.
Show answer
Answer: False
An exclamation mark shows strong emotion or excitement. A question mark ends a question.
The contraction 'can't' is a shortened form of the words ___ not.
Show answer
Answer: can
'Can't' = 'can' + 'not' with the 'no' replaced by an apostrophe. So can't = cannot.
Which sentence uses a comma correctly?
- I went, to the store.
- I bought apples, oranges, and bananas.
- She, ran quickly.
- He ate, dinner.
Show answer
Answer: I bought apples, oranges, and bananas.
Commas separate items in a list. This sentence correctly places commas between three list items.
Proper nouns like the names of specific people and cities are always capitalized.
Show answer
Answer: True
Proper nouns name specific things — people's names, city names, days, months — and are always capitalized no matter where they appear.
Fun facts
- The exclamation mark was originally called the 'note of admiration' in English — it dates back to the 1400s!
- For centuries, books had NO punctuation at all. Ancient Greek and Roman writers didn't use periods, commas, or spaces between words — it was all one continuous string of letters!
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