Practice
English practice: punctuation in sentences
Sign in to saveCompare these two messages: lets eat grandma and Let's eat, Grandma. A capital letter, apostrophe, and comma make the second message much easier to understand.
Edit short English sentences by using basic punctuation to show where an idea starts, stops, pauses, asks a question, or quotes speech.
Read and practice
Read the examples and try the written questions in this guide. Listening recordings are not available for this lesson yet.
Try the written questions
After lunch, Maya checked the timetable. /ˈɑːf.tə lʌntʃ, ˈmaɪ.ə tʃekt ðə ˈtaɪmˌteɪ.bəl/
The short answer
Start complete sentences with a capital letter and end them with the punctuation that matches their purpose. Use commas to organise parts of a sentence, and use apostrophes carefully for possession and contractions.
After lunch, Maya checked the timetable.
Why it works: The capital begins the sentence, the comma follows the opening phrase, and the full stop ends the statement.
5 more examples
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The library closes at six.
This is a complete statement, so it ends with a full stop.
Not this:Does the library close at
six?What changes: The same information becomes a direct question, so it needs a question mark. -
On Friday, we will visit the museum.
The comma separates the opening time phrase from the main clause.
Not this:We will visit the museum on
Friday.What changes: The time phrase comes at the end, so a comma is usually unnecessary. -
Please bring a notebook, a pen, and your ID.
Commas separate the items in the list so the reader can identify each one.
Not this:Please bring your
notebook and your ID. What changes: A short two-item list normally uses and without a comma. -
The teacher's desk is near the window.
The apostrophe and s show that the desk belongs to one teacher.
Not this:The
teachers'desks are near the window. What changes: The apostrophe follows the plural s when several teachers own the desks. -
Nina said, "I can send the file tonight."
Quotation marks show Nina's exact words. The comma introduces the quoted speech.
Not this:Nina said
that she could sendthe file that night. What changes: This reports the idea rather than using Nina's exact words, so quotation marks are not needed.
Read the full guide
Read a sentence once for meaning before you add punctuation. Ask whether it is a statement, question, command, or quotation. Then look for lists, opening phrases, possessives, and contractions. You do not need to add a comma wherever you pause while speaking. Put one where it helps the grammar or separates items clearly.
End statements and questions clearly
A full stop closes a statement. A question mark closes a direct question. These marks tell the reader how the sentence works before they reach the next line. Do not use a question mark for an indirect question such as I asked where the station was.
The station is across the road.
This statement gives information, so it ends with a full stop.
Is the station across the road?
This sentence asks directly for information, so it ends with a question mark.
Use capital letters for clear starts and names
Every complete sentence begins with a capital letter. Capitalise the pronoun I and proper names such as Amina, London, Monday, and English. Common nouns stay lower case unless they begin a sentence. A capital letter does not make an ordinary word more important.
I met Amina in London on Monday.
I, Amina, London, and Monday are capitalised because they are the sentence pronoun or specific names.
Which word needs a capital letter in we study english on tuesday?
Write: We study English on Tuesday. The first word, the language name, and the day name need capitals.
Separate items in a list
Use commas to separate three or more items that have the same role in a list. The final items are usually joined with and or or. A comma can prevent a reader from joining the wrong words together, especially when a list is long.
The course covers listening, reading, writing, and speaking.
Each comma separates one skill from the next. The final and joins the last two items.
Tea, coffee, and water are available.
The commas make the three choices easy to scan in a question.
Add commas after useful opening phrases
An opening phrase can give time, place, condition, or contrast before the main clause. A comma often separates that opening material from the main idea. This is especially helpful when the opening part is longer than one or two words.
Before the meeting begins, turn off your phone.
The opening time clause ends before the instruction begins, so a comma separates the two parts.
Where does the comma go in If it rains we will meet inside?
Write: If it rains, we will meet inside. The if-clause comes first, so the comma follows it.
Use apostrophes for possession and contractions
An apostrophe can show possession: the student's answer means the answer belongs to one student. It can also show omitted letters in a contraction: don't means do not. Do not put an apostrophe in ordinary plural nouns such as books or lessons.
The student's answer was correct.
Student's shows one student's possession. The apostrophe is not used simply because the word ends in s.
We don't have class tomorrow.
The apostrophe marks the missing letter in do not. In formal writing, you may write the two words in full.
Show exact words with quotation marks
Quotation marks tell the reader that the words inside them are exact speech or an exact written phrase. Use a reporting clause when it helps identify the speaker. If you only explain what someone said, you can usually write a reported statement without quotation marks.
The guide said, "Keep your ticket until the end."
The quoted sentence gives the guide's exact instruction. The comma introduces the quotation.
Do you need quotation marks in Omar explained that the room was full?
No. The sentence reports Omar's message in new words instead of giving an exact quotation.
Before you go
Remember this
Begin a sentence with a capital letter and choose the ending mark that fits its purpose. Use commas to separate items and useful sentence parts. Use apostrophes for ownership and contractions, and use quotation marks only for exact spoken or written words.
Practice with the written examples
You can practice with the written questions in the Learn tab. Each answer includes an explanation.
Try the written questionsListening test not available yet
This lesson does not have the recordings needed for a listening test. Use the written questions in the guide to check your understanding.
Try the written questionsQuestions about "English practice: punctuation in sentences"
When should I use a full stop and when should I use a question mark?
Use a full stop after a complete statement and a question mark after a direct question. A sentence such as I asked where the station was reports a question, but it is still a statement and takes a full stop.
The library closes at six.
Do I need a comma after every opening word or phrase?
No. A comma is often useful after a longer opening phrase or clause because it shows where the main clause begins. Very short openings do not always need one, so follow the grammar and the style expected in your course or publication.
Does the library close at six?
Why are commas used in lists?
Commas separate items that have the same role in a list, helping the reader see where one item ends and the next begins. A short list of two items normally uses and or or without a comma between the two items.
On Friday, we will visit the museum.
What does an apostrophe show in English?
An apostrophe can show possession, as in the student's answer, or missing letters in a contraction, as in don't. It does not belong in ordinary plurals such as books, chairs, or ideas.
We will visit the museum on Friday.
When should I use quotation marks?
Use quotation marks when you reproduce a person's exact words or an exact written phrase. If you report the meaning in your own words, quotation marks are usually unnecessary. Punctuation placement can vary by published style, so use one house style consistently.
Please bring a notebook, a pen, and your ID.