English grammar worksheet for practicing articles (a, an, the) with answers provided.

Problem Analysis:

The task involves filling in the correct articles (`a`, `an`, `the`) in given sentences. This requires understanding the rules of article usage in English grammar:

1. Indefinite Articles (`a` and `an`):
- Used before singular nouns to refer to something in general or unspecified.
- `a` is used before words that begin with a consonant sound.
- `an` is used before words that begin with a vowel sound.

2. Definite Article (`the`):
- Used before singular or plural nouns to refer to something specific or previously mentioned.
- Also used with unique entities (e.g., names of planets, oceans, etc.).

Solution:

#### Part 1: Fill in the correct article
We need to determine whether to use `a`, `an`, or `the` for each noun.

1. A ball
- "Ball" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

2. An apple
- "Apple" is a singular noun and not specific. It begins with a vowel sound.
- Correct: `An`

3. The Earth
- "Earth" refers to a unique entity (our planet).
- Correct: `The`

4. A chair
- "Chair" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

5. A pear
- "Pear" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

6. An onion
- "Onion" is a singular noun and not specific. It begins with a vowel sound.
- Correct: `An`

7. The sun
- "Sun" refers to a unique entity (our sun).
- Correct: `The`

8. A book
- "Book" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

9. A story
- "Story" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

10. An egg
- "Egg" is a singular noun and not specific. It begins with a vowel sound.
- Correct: `An`

#### Part 2: Complete the sentences below
We need to fill in the appropriate article for each sentence.

1. The sun is very hot.
- "Sun" refers to a unique entity (our sun).
- Correct: `The`

2. Can I have an apple?
- "Apple" is a singular noun and not specific. It begins with a vowel sound.
- Correct: `An`

3. Do you want to eat an egg?
- "Egg" is a singular noun and not specific. It begins with a vowel sound.
- Correct: `An`

4. I want to buy a new car.
- "Car" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

5. Mommy likes to read a story.
- "Story" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

6. I have a blue ball.
- "Ball" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

7. He broke the chair.
- "Chair" refers to a specific chair (likely one already mentioned or known in context).
- Correct: `The`

8. She reads a book in class.
- "Book" is a singular noun and not specific. It begins with a consonant sound.
- Correct: `A`

9. I have an apple and a pear for lunch.
- "Apple" begins with a vowel sound, so use `an`.
- "Pear" begins with a consonant sound, so use `a`.
- Correct: `An` and `A`

Final Answer:

\boxed{
\begin{array}{ll}
\text{1.1.} & \text{A ball} \\
\text{1.2.} & \text{An apple} \\
\text{1.3.} & \text{The Earth} \\
\text{1.4.} & \text{A chair} \\
\text{1.5.} & \text{A pear} \\
\text{1.6.} & \text{An onion} \\
\text{1.7.} & \text{The sun} \\
\text{1.8.} & \text{A book} \\
\text{1.9.} & \text{A story} \\
\text{1.10.} & \text{An egg} \\
\hline
\text{2.1.} & \text{The sun is very hot.} \\
\text{2.2.} & \text{Can I have an apple?} \\
\text{2.3.} & \text{Do you want to eat an egg?} \\
\text{2.4.} & \text{I want to buy a new car.} \\
\text{2.5.} & \text{Mommy likes to read a story.} \\
\text{2.6.} & \text{I have a blue ball.} \\
\text{2.7.} & \text{He broke the chair.} \\
\text{2.8.} & \text{She reads a book in class.} \\
\text{2.9.} & \text{I have an apple and a pear for lunch.} \\
\end{array}
}