Welcome to Sentence Demarcation!
Have you ever tried to read a book where all the words were jumbled together without any breaks? It would be very confusing! Sentence demarcation is just a fancy way of saying "marking the start and end of a sentence."
Think of punctuation marks as the traffic lights of writing. They tell the reader when to go, when to slow down, and when to stop. In these notes, we will learn how to use capital letters, full stops, question marks, and exclamation marks to make your writing clear and exciting.
1. Capital Letters (G5.1)
A capital letter is like a "start" sign. It tells the reader that a new idea is beginning. There are three main times you must use them:
A. To Start a Sentence
Every single sentence must begin with a capital letter, no matter what.
Example: The sun was shining brightly.
B. For Proper Nouns
A noun is a naming word. A proper noun is the specific name of a person, place, or day of the week.
Examples: London, Saturday, Mr Jones, England.
C. For the word "I"
When you are talking about yourself using the word "I", it must always be a capital letter, even if it is in the middle of a sentence.
Example: Ben and I went to the park.
Quick Tip: Don't worry if you find it hard to remember every proper noun at first. Just remember: if it’s a specific name, it needs a big letter!
2. Full Stops (G5.2)
A full stop is used to end a sentence that is a statement or a command.
Statements (G2.1)
A statement is a sentence that tells the reader a fact or an idea.
Example: The cat is sleeping on the mat.
Commands (G2.3)
A command is a sentence that tells someone to do something. They often start with an imperative verb (a "bossy" word).
Example: Pick up your coat.
Key Takeaway: If your sentence is just giving information or a simple instruction, end it with a full stop.
3. Question Marks (G5.3)
A question mark is used at the end of a sentence that asks something. These are called questions (G2.2).
Questions often start with words like Who, What, Where, When, Why, or How. Sometimes they end with a question tag, which is a short question added to the end of a statement.
Example 1: Where are you going?
Example 2: It is cold today, isn't it?
Did you know? You can often spot a question because it is looking for an answer!
4. Exclamation Marks (G5.4)
An exclamation mark is used to show strong feelings, like surprise, anger, or excitement. It is used at the end of exclamations (G2.4).
In your English tests, a formal exclamation sentence usually starts with the words What or How and contains a verb.
Example 1: What a beautiful day it is!
Example 2: How clever you are!
You can also use exclamation marks to make a command sound more urgent.
Example: Stop that thief!
Common Mistake: Try not to use too many exclamation marks in one piece of writing. If you use them all the time, they lose their power!
Summary: Which Mark Should I Use?
When you get to the end of a sentence, ask yourself these three questions:
1. Am I asking something? Use a question mark (?).
2. Am I showing a huge emotion or using a "What/How" structure? Use an exclamation mark (!).
3. Am I just telling a fact or giving a simple order? Use a full stop (.).
Wait! Did you remember the capital letter at the beginning? Every sentence needs one, no matter which end mark you choose!
Quick Review Quiz
Can you spot the errors in these sentences?
1. the dog barked loudly (Missing a capital letter and a full stop).
2. Where is my hat. (Should use a question mark instead of a full stop).
3. What a loud noise that was? (Should use an exclamation mark instead of a question mark).
Note: For more information on using commas, brackets, or colons, see the other chapters in the Punctuation (G5) section.