Capital letters, full stops, question marks, and exclamation marks — the essentials every sentence needs.
What you'll learn
Punctuation marks tell the reader how to read a sentence — where it starts, where it ends, and what kind of sentence it is. Without them, writing runs together and becomes hard to follow. This lesson covers the basics that every sentence needs: capital letters and the three main end-marks. Later lessons in this category cover commas, apostrophes, and quotation marks in full depth.
Every sentence starts with a capital letter. Capital letters are also used for proper nouns — specific names of people, places, days of the week, months, nationalities, and languages — and for the pronoun 'I', which is always capitalized wherever it appears in a sentence.
A full stop (.) ends a statement. A question mark (?) ends a question. An exclamation mark (!) ends a sentence that shows strong feeling, surprise, or urgency. Every sentence needs exactly one of these three marks at the end — never more than one, and never none.
The pronoun 'I' is always capitalized, no matter where it appears in the sentence.
Every sentence starts with a capital letter, even in casual writing.
A question always ends with a question mark, not a full stop.
"Hey! Are you free tonight?"
"Yes! What time?"
"Around 8. See you at the usual place."
"Perfect. See you then!"
Exercise 1 · Choose the correctly capitalized sentence
Which sentence uses capital letters correctly?
Exercise 2 · Choose the correct end punctuation
Which punctuation mark ends a statement (a sentence that gives information)?
Exercise 3 · Choose the correct end punctuation
Which punctuation mark ends a question?
Exercise 4 · Choose the correct sentence
Which sentence correctly uses an exclamation mark?
Exercise 5 · Choose the word that needs a capital letter
Which word should start with a capital letter?
Exercise 6 · Choose the correctly punctuated sentence
Which sentence is correctly punctuated?
Exercise 7 · Add the correct end punctuation
Add the correct end punctuation: 'What time is it'
Exercise 8 · Correct the capitalization
Correct the capitalization: 'i am from ukraine'
Exercise 9 · Choose the correct answer
The pronoun 'I' (meaning yourself) is always written...
Exercise 10 · Sort the punctuation marks into groups
0 / 6 sorted
Exercise 11 · Choose the proper noun
Which of these is a proper noun and needs a capital letter?
Five quick questions to check what stuck.
Question 1 / 5
Score: 0/0
Which sentence uses punctuation correctly?
Apostrophes
Learn the two jobs of the apostrophe in English: showing possession (Tom's book) and forming contractions (don't, it's) — plus the classic its/it's mix-up.
Commas
Learn the main uses of the comma in English: separating list items, joining clauses with a conjunction, setting off introductory phrases, and marking extra (non-essential) information — plus the comma splice error to avoid.
Quotation Marks and Direct Speech
Learn how to punctuate direct speech in English: quotation marks, capital letters, comma placement, and starting a new paragraph for each new speaker.
Advanced Punctuation
Learn semicolons, colons, dashes, parentheses, brackets, and hyphens in compound adjectives — the punctuation marks that add precision to more complex writing.