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Singular Countable Nouns

July 10, 2026
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📐 CHAPTER 14: SINGULAR COUNTABLE NOUNS

English Grammar | By Mary Ansell

📖 1. THE USE OF DETERMINERS WITH SINGULAR COUNTABLE NOUNS

Determiner

In English, singular countable nouns usually cannot be used alone; they must be preceded by a determiner.

Examples

  • a box
  • the person
  • each child
  • every tree

💡 Note: Determiners help determine to which particular entities the nouns are referring.

📋 2. A AND AN

Indefinite Article

The word a is often referred to as the indefinite article.

It has two forms: a and an.

Rule 1: Use a before words that begin with a consonant sound.

Examples

  • a broom
  • a garage
  • a green apple

Rule 2: Use a before words beginning with vowels but pronounced with a consonant sound.

Examples

  • a euphonium (y sound)
  • a utensil (y sound)
  • a one-way street (w sound)
  • a uniform
  • a university
  • a useful tool

Rule 3: Use an before words that begin with a vowel sound.

Examples

  • an apple
  • an old broom
  • an umbrella
  • an hour (silent h)

🔹 Words with Silent h

Examples

  • an heir
  • an heirloom
  • an honest person
  • an honor
  • an honorable deed
  • an honorarium
  • an hour
  • an hourglass

📋 3. THE USE OF A AND AN BEFORE SINGULAR COUNTABLE NOUNS

3a. A Weakened Form of One

Examples

  • I would like a cup of tea.
  • A car is parked in front of the house.
  • The child owns a bicycle.

3b. Naming a Profession

Examples

  • She is an artist.
  • He is a student.

3c. Making a General Statement

Examples

  • A bank account can provide a good means of saving money.
  • An accountant must have a good knowledge of arithmetic.
  • A good pair of scissors should be used for cutting cloth.

3d. Referring to Something Not Mentioned Before

Examples

  • Where can I find a telephone?
  • Suddenly we heard an eerie sound.
  • All at once a moose appeared in front of us.

3e. A or An with the Meaning of Per

Examples

  • once a week (once per week)
  • two dollars a dozen (two dollars per dozen)
  • four times a year (four times per year)

📋 4. THE USE OF THE BEFORE SINGULAR COUNTABLE NOUNS

Definite Article

The word the is often referred to as the definite article.

4a. Referring to Something Mentioned Before

Examples

  • Here is the book I mentioned to you last week.
  • As I was walking to work I passed a garden. The garden was full of roses.

💡 Note: First mention uses a/an; subsequent mention uses the.

4b. Referring to Something Unique

Examples

  • I have found the answer.
  • This is the shortest route into town.
  • There is a car stopped in the middle of the road.
  • She is at the top of her class.
  • They like to be the center of attention.

4c. Referring to Something Obvious

Examples

  • The house needs to be painted. (one's own house)
  • The sun rose at six o'clock this morning. (the sun closest to earth)
  • I'm going to the park. (the only park in the vicinity)
  • Don't slam the door. (the door of the room you're in)

4d. Referring to Something as a Class

Examples

  • The telephone is a modern convenience. (telephones as a class)
  • The horse is a domesticated animal. (horses as a class)
  • The eagle is a bird of prey. (eagles as a class)

💡 Note: The is not used when man represents the human race as a class.

Example: Man has invented many things.

📝 EXERCISES FOR CHAPTER 14

Exercise 1. Rewrite each of the following sentences, changing the subject of the verb to the singular, inserting a or an before the subject, as appropriate, and changing the verb to agree with the subject.

Example: Violins are difficult to play. → A violin is difficult to play.
Unions have been formed. → A union has been formed.

  1. Avocados are expensive.
  2. Windows are an important feature of an artist's studio.
  3. Umbrellas should not be used during a thunderstorm.
  4. Horses can be useful in the mountains.
  5. Cashews are a type of nut.
  6. Onions can be used for flavoring soup.
  7. Trucks have many uses.
  8. Hours passed.
  9. Sentences should have proper punctuation.
  10. Escalators are very convenient.
  11. Uniforms must be worn.
  12. Boxes were found on the floor.
  13. Marshes lie beyond the city boundary.
  14. Ideas can be valuable.
  15. Eggs are a good source of protein.

Answers to Exercise 1:

  1. An avocado is expensive.
  2. A window is an important feature of an artist's studio.
  3. An umbrella should not be used during a thunderstorm.
  4. A horse can be useful in the mountains.
  5. A cashew is a type of nut.
  6. An onion can be used for flavoring soup.
  7. A truck has many uses.
  8. An hour passed.
  9. A sentence should have proper punctuation.
  10. An escalator is very convenient.
  11. A uniform must be worn.
  12. A box was found on the floor.
  13. A marsh lies beyond the city boundary.
  14. An idea can be valuable.
  15. An egg is a good source of protein.

Exercise 2. Fill in each blank with either the indefinite article (a or an) or the definite article (the). Use a or an with nouns referring to people or things which have not been mentioned previously, and use the with nouns referring to people or things which have been mentioned previously.

Example: I bought ______ book. ______ book was very interesting. → I bought a book. The book was very interesting.

  1. There was ______ accident on the highway. ______ accident caused a long delay.
  2. She is ______ teacher. ______ teacher works at my school.
  3. I need ______ umbrella. Do you know where I can find ______ umbrella?
  4. He lives in ______ old house. ______ house has a beautiful garden.
  5. We saw ______ eagle. ______ eagle was flying high in the sky.
  6. She bought ______ dress. ______ dress was very expensive.
  7. There is ______ bookstore on the corner. ______ bookstore has many interesting books.
  8. He is ______ lawyer. ______ lawyer is very famous.
  9. I heard ______ strange noise. ______ noise came from the basement.
  10. She found ______ ring. ______ ring was made of gold.

Answers to Exercise 2:

  1. an, The
  2. a, The
  3. an, an
  4. an, The
  5. an, The
  6. a, The
  7. a, The
  8. a, The
  9. a, The
  10. a, The

Exercise 3. Fill in each blank with a, an, or the as appropriate.

  1. ______ moon orbits ______ Earth.
  2. I need ______ pencil to write ______ letter.
  3. She is ______ most talented musician I know.
  4. He wants to become ______ doctor.
  5. ______ sun rises in ______ east.
  6. Can you play ______ guitar?
  7. She is ______ honest person.
  8. We visited ______ museum yesterday. ______ museum was very interesting.
  9. He is ______ university professor.
  10. I will be there in ______ hour.

Answers to Exercise 3:

  1. The, the
  2. a, a
  3. the
  4. a
  5. The, the
  6. the
  7. an
  8. a, The
  9. a
  10. an

📌 KEY SUMMARY

🔹 Articles Summary

Article Use Examples
a Before consonant sounds a cat, a university, a one-way street
an Before vowel sounds an apple, an hour, an honest person
the Specific/known items, unique items, previously mentioned the sun, the book, the answer

💡 Key Points:

  • Singular countable nouns must have a determiner.
  • A/An = indefinite article (not specific).
  • The = definite article (specific).
  • Use a before consonant sounds (including y and w sounds).
  • Use an before vowel sounds (including silent h).
  • First mention → a/an; subsequent mention → the.
  • Use the for unique things (sun, moon, answer).
  • Use the for things that are obvious from context.

📚 English Grammar | By Mary Ansell
Chapter 14: Singular Countable Nouns

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