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Capitalization in English–Ten Rules for Using Capital Letters

Capitalization in English–Ten Rules for Using Capital Letters

Most of our postings are about speaking. Sometimes, however, you may need to write in English. Maybe you need to write a note to your boss or co-worker. Perhaps you need to send an e-mail to someone. You may wonder, ” What do you capitalize in English?”.

Perhaps your native language is Middle Eastern, (for example, Arabic), or or Asian, (for example, Chinese). Perhaps your language does not use the Roman (western) alphabet (such as Russian). If so, your language may not have capital (or upper case) letters at all. If your native language uses the Roman alphabet, (Spanish, for example), your are familiar with capital letters.

The rules for capitalization in English, however, may be a little different than what you are used to in your language. Today I talk about ten rules for English capitalization. At the end, you will be able to download a worksheet sheet for further practice.

1. Always capitalize the first word in a sentence.

There are many cold days in the winter. That is why you need to have a warm coat.

2. Always capitalize the pronoun I.

Some people like to ski, but I don’t.

3. Always capitalize proper nouns. This means names of specific people, cities, states, countries, continents, streets, organizations, businesses, holidays, and well-known products.

A man waited for the bus. We don’t capitalize “man,” because it could be any man, so we use lower case or small letters.

Peter Smith waited for the bus. We capitalize Peter Smith, because now we know exactly who waited for the bus.

Denver is a large city. Denver is a specific city.

Colorado has many nice ski areas.  Colorado is a specific state.

Denver and Colorado are located in the USA, in North America.

I drove my car down the street. We don’t capitalize street because it could be any street.

I drove my car down Colfax Avenue.  Now we know which street, so we use capital letters.

The American Red Cross provided help for people after the flood.

We ate dinner at a restaurant last night.  Again we don’t know which restaurant, so we use lower case letters.

We ate dinner at Burger King last night.  Now we know which restaurant, so we use capital letters.

Most children are very excited at Christmas.

Would you like a soda?  We use lower case letters because we there are many kinds of soda. We don’t know what kind.

Would you like a Coke? Coke is a specific, well-known brand of soda.

4. Always capitalize names of languages, nationalities, and religions.

My neighbor speaks French.

His roommate is Vietnamese, but he likes to eat Mexican food.

Most people from India are Hindu.

5. There are some special capitalization rules for titles of books, movies, and TV shows. We capitalize the first word, the last word, and important words such as nouns, verbs, adjectives, and adverbs. We usually do not capitalize small words such as a, the, of, in, or for (unless they are the first word in the title).

I checked out a book at the library called How to Fix Almost Anything.

My sister’s favorite movie for all times is Titanic.

Last year I watched The Late Show on TV every night after Channel 4 News.

6. Always capitalize names of the days of the week and the months of the year.

My days off are Tuesday and Wednesday.

I was born in September.

7. We capitalize titles for family relationships such as aunt, uncle, grandma, grandpa, mom, or dad when it is part of their name, or when you are using the title in place of their name.

My aunt is coming to visit me next week. We use lower case letters because we don’t know which aunt. Even if we knew, her name is not “aunt.”

Aunt Mary is coming to visit me next week. Now we know specifically who is coming to visit.

My dad is from Canada. We use a lower case letter because your father’s name is not “dad.”

Are you going back to Canada to visit Grandma, Dad?  In this sentence we are talking to Dad. When you talk to your father you don’t call him by his first name. You call him “Dad.” You are also using “Grandma” as your grandmother’s name, because you don’t call her by her first name. You all her”Grandma.”

8. Always capitalize titles before people’s names such as Mr., Mrs., or Dr.

My son’s teacher is Mrs. Johnson.

I listened to a speech by Governor Hickenlooper.

9. Capitalize the names of religious holy books and God.

The Bible tells us how God created the world.

Muslims read the Koran and pray to Allah.

10. Capitalize specific names of geographical areas such as oceans, rivers, lakes, and mountain ranges.

I love to swim in the ocean.  We use lower case letter here because we don’t know which ocean.

I live to swim in the Pacific Ocean. We use capital letters because now we are specific.

David went rafting in the Platte River.

Last year we vacationed at Lake Tahoe.

The Andes Mountains are located in South America.

Now that you have learned the most important, common rules for capitalization in English, it is important to note that there are some exceptions.

We don’t capitalize e-mail addresses or websites.

His e-mail address is [email protected]

I have ordered many books from

Sometimes you may see a business whose name is written in all lower case letters. This may surprise you, because you now know that this is incorrect. Some businesses, however, use lower case letters to create a specific style and catch your attention.

Writing e-mails and sending texts also have some special rules.

Some people write e-mails or send texts with almost no capital letters. If you are e-mailing, texting, or tweeting to your friend, and you want to write without capital letters, it probably doesn’t matter. If you both understand each other, you can get away with it. However, if you are sending an e-mail to your boss or are applying for a job, you should use correct capitalization in your communication. Your boss will be pleased.

Now you know the rules for using capital letters, and the rules for not using them. You also know when it is okay to break the rules, and when you should not. This will help your written English to become more native-like and impress people you communicate with.

You can download the practice sheet now!

Idioms of the day

  1. To get away with–to break the rules, but not get into trouble. I was driving faster than the speed limit, but there were no policemen around, so I got away with it.
  2. in hot water–in trouble. I was driving over the speed limit and I got a ticket. Now I’m in hot water.

Misty Davidson
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