English grammar worksheet focusing on the correct use of articles "a," "an," and "the" in sentences and word contexts.

Let's solve both exercises step by step, explaining the rules for using a, an, and the.

---

🔹 Rules Recap:

- "a" is used before words that start with a consonant sound.
- "an" is used before words that start with a vowel sound (a, e, i, o, u).
- "the" is used when referring to something specific or unique, or when it's clear from context which one we're talking about.

---

## ✔ Exercise 1: Fill in the blanks with a, an, or the.

We are filling in indefinite articles (a/an) or definite article (the) depending on whether the noun is general or specific.

| No. | Word | Answer | Explanation |
|-----|----------------|--------|-------------|
| 1 | ______ owl | an | "owl" starts with a vowel sound /əʊ/ → an |
| 2 | ______ rocket | a | "rocket" starts with consonant sound /r/ → a |
| 3 | ______ apron | an | "apron" starts with a vowel sound /æ/ → an |
| 4 | ______ sun | the | The sun is unique → the |
| 5 | ______ page | a | General reference → a |
| 6 | ______ computer | a | General reference → a |
| 7 | ______ moon | the | The moon is unique → the |
| 8 | ______ Missouri River | the | Names of rivers always take the |
| 9 | ______ mango | a | Starts with consonant /m/ → a |
| 10 | ______ animal | an | "animal" starts with vowel sound /æ/ → an |
| 11 | ______ eagle | an | "eagle" starts with vowel sound /iː/ → an |
| 12 | ______ baby | a | Starts with consonant /b/ → a |

✔ Exercise 1 Answers:
1. an owl
2. a rocket
3. an apron
4. the sun
5. a page
6. a computer
7. the moon
8. the Missouri River
9. a mango
10. an animal
11. an eagle
12. a baby

---

## ✔ Exercise 2: Complete the sentences with a, an, or the.

Now we apply context and grammar rules.

| Sentence | Answer | Explanation |
|--------|--------|-----------|
| 1. There is ______ rainbow in ______ sky. | a, the | A rainbow (one, not specific) → a; the sky is unique → the |
| 2. Who is ______ man outside ______ gate? | the, the | "The man" refers to a specific person; "the gate" is specific (likely known from context) → the, the |
| 3. ______ doctor gave Jane ______ injection. | The, an | "The doctor" implies a specific doctor (perhaps previously mentioned); "an injection" = one injection, general → the, an |
| 4. Paul opened ______ door to let ______ dog in. | the, the | "The door" (specific door, likely the front door); "the dog" (known dog) → the, the |
| 5. Mark is ______ only child in ______ family. | the, the | "The only child" = unique; "the family" = specific family → the, the |
| 6. What's ______ largest animal in ______ world? | the, the | Superlative ("largest") needs the; "the world" is unique → the, the |
| 7. There's ______ nest in ______ tree. | a, the | One nest (general) → a; "the tree" could be specific (maybe known from context) → the |
| 8. Sue is writing ______ letter to her grandfather. | a | General letter, not specified → a |
| 9. Jack has ______ brother and ______ sister. | a, a | General siblings → a, a |
| 10. We reached ______ top of ______ hill in two hours. | the, the | "The top" = specific point; "the hill" = specific hill → the, the |

✔ Exercise 2 Answers:
1. There is a rainbow in the sky.
2. Who is the man outside the gate?
3. The doctor gave Jane an injection.
4. Paul opened the door to let the dog in.
5. Mark is the only child in the family.
6. What's the largest animal in the world?
7. There's a nest in the tree.
8. Sue is writing a letter to her grandfather.
9. Jack has a brother and a sister.
10. We reached the top of the hill in two hours.

---

📝 Final Summary:

- Use a/an for general, non-specific things.
- Use the for specific, unique, or previously mentioned things.
- a before consonant sounds, an before vowel sounds.
- Rivers, oceans, mountains, deserts, and unique things (sun, moon, earth) use the.

Let me know if you'd like this turned into a printable worksheet!