Grade 3 worksheet on identifying complex and compound sentences, featuring a list of example sentences and a definition with a cartoon elephant.

Problem Overview:

The task is to determine whether each sentence in the provided list is a compound sentence or a complex sentence. The definitions are as follows:

- Compound Sentence: Two or more independent clauses joined by coordinating conjunctions (e.g., for, and, nor, but, or, yet, so).
- Complex Sentence: One independent clause and one or more dependent clauses, often introduced by subordinating conjunctions (e.g., because, although, after, while).

Solution Approach:

We will analyze each sentence based on its structure and identify whether it contains:
1. Two independent clauses joined by a coordinating conjunction → Compound Sentence.
2. An independent clause and a dependent clause introduced by a subordinating conjunction → Complex Sentence.

Analysis of Each Sentence:

#### 1. They finished practice early, and they went for ice cream.
- Structure: Two independent clauses ("They finished practice early" and "they went for ice cream") joined by the coordinating conjunction "and."
- Type: Compound Sentence

#### 2. Your mom cleaned your room while you were out.
- Structure: One independent clause ("Your mom cleaned your room") and one dependent clause ("while you were out") introduced by the subordinating conjunction "while."
- Type: Complex Sentence

#### 3. They practice yoga, and they like meditation.
- Structure: Two independent clauses ("They practice yoga" and "they like meditation") joined by the coordinating conjunction "and."
- Type: Compound Sentence

#### 4. After the end of the movie, Juliette wanted more popcorn.
- Structure: One independent clause ("Juliette wanted more popcorn") and one dependent clause ("After the end of the movie") introduced by the subordinating conjunction "after."
- Type: Complex Sentence

#### 5. I would love to help, but I have work to do.
- Structure: Two independent clauses ("I would love to help" and "I have work to do") joined by the coordinating conjunction "but."
- Type: Compound Sentence

#### 6. Before you answer the door, look who it is through the window.
- Structure: One independent clause ("look who it is through the window") and one dependent clause ("Before you answer the door") introduced by the subordinating conjunction "before."
- Type: Complex Sentence

#### 7. Do you prefer an ice cream sundae, or do you prefer some cake?
- Structure: Two independent clauses ("Do you prefer an ice cream sundae" and "do you prefer some cake") joined by the coordinating conjunction "or."
- Type: Compound Sentence

#### 8. Phil has studied hard because the test is tomorrow.
- Structure: One independent clause ("Phil has studied hard") and one dependent clause ("because the test is tomorrow") introduced by the subordinating conjunction "because."
- Type: Complex Sentence

#### 9. Cameron wants to exercise, yet he is reading a book.
- Structure: Two independent clauses ("Cameron wants to exercise" and "he is reading a book") joined by the coordinating conjunction "yet."
- Type: Compound Sentence

#### 10. We should leave for the movie since you are here.
- Structure: One independent clause ("We should leave for the movie") and one dependent clause ("since you are here") introduced by the subordinating conjunction "since."
- Type: Complex Sentence

#### 11. They hurried through supper, so they could have dessert.
- Structure: Two independent clauses ("They hurried through supper" and "they could have dessert") joined by the coordinating conjunction "so."
- Type: Compound Sentence

#### 12. She can't write her story unless her pencil is sharp.
- Structure: One independent clause ("She can't write her story") and one dependent clause ("unless her pencil is sharp") introduced by the subordinating conjunction "unless."
- Type: Complex Sentence

Final Answer:

Based on the analysis, the sentences can be classified as follows:

| Sentences | Complex | Compound |
|---------------------------------------------------------------------------|---------------|---------------|
| 1. They finished practice early, and they went for ice cream. | | ✓ |
| 2. Your mom cleaned your room while you were out. | ✓ | |
| 3. They practice yoga, and they like meditation. | | ✓ |
| 4. After the end of the movie, Juliette wanted more popcorn. | ✓ | |
| 5. I would love to help, but I have work to do. | | ✓ |
| 6. Before you answer the door, look who it is through the window. | ✓ | |
| 7. Do you prefer an ice cream sundae, or do you prefer some cake? | | ✓ |
| 8. Phil has studied hard because the test is tomorrow. | ✓ | |
| 9. Cameron wants to exercise, yet he is reading a book. | | ✓ |
| 10. We should leave for the movie since you are here. | ✓ | |
| 11. They hurried through supper, so they could have dessert. | | ✓ |
| 12. She can't write her story unless her pencil is sharp. | ✓ | |

$$
\boxed{
\begin{array}{|c|c|c|}
\hline
\text{Sentences} & \text{Complex} & \text{Compound} \\
\hline
1 & & \checkmark \\
2 & \checkmark & \\
3 & & \checkmark \\
4 & \checkmark & \\
5 & & \checkmark \\
6 & \checkmark & \\
7 & & \checkmark \\
8 & \checkmark & \\
9 & & \checkmark \\
10 & \checkmark & \\
11 & & \checkmark \\
12 & \checkmark & \\
\hline
\end{array}
}
$$