Educational worksheet for practicing grammar skills in identifying simple and complete subjects and predicates.

Problem Overview:

The task involves identifying and differentiating between simple subjects and complete predicates in sentences. Here's a breakdown of the requirements:

1. Simple Subject: The main noun or pronoun that performs the action in the sentence.
2. Complete Predicate: The part of the sentence that tells what the subject does, including the verb and all its modifiers.

Solution Approach:

We will analyze each sentence step by step to identify the simple subject and the complete predicate, then underline them as required.

---

#### Part A: Underline the complete predicate once and the simple subject twice.

1. A small family lived on a fantasy planet.
- Simple Subject: "family"
- Complete Predicate: "lived on a fantasy planet"
- Underlined Sentence: A small family lived on a fantasy planet.

2. The family’s two children played near the space launch.
- Simple Subject: "children"
- Complete Predicate: "played near the space launch"
- Underlined Sentence: The family’s two children played near the space launch.

3. The little girl dreamed about life on Earth.
- Simple Subject: "girl"
- Complete Predicate: "dreamed about life on Earth"
- Underlined Sentence: The little girl dreamed about life on Earth.

4. High-speed spaceships delivered extra food.
- Simple Subject: "spaceships"
- Complete Predicate: "delivered extra food"
- Underlined Sentence: High-speed spaceships delivered extra food.

5. The spaceship carried huge cargo ships.
- Simple Subject: "spaceship"
- Complete Predicate: "carried huge cargo ships"
- Underlined Sentence: The spaceship carried huge cargo ships.

6. Twinkling stars appeared in the dark sky.
- Simple Subject: "stars"
- Complete Predicate: "appeared in the dark sky"
- Underlined Sentence: Twinkling stars appeared in the dark sky.

---

#### Part B: Draw a line between the complete subject and the complete predicate.

1. The planet’s inhabitants lived underground homes.
- Complete Subject: "The planet’s inhabitants"
- Complete Predicate: "lived underground homes"
- Sentence with Line: The planet’s inhabitants | lived underground homes.

2. A special machine manufactures air inside the family’s home.
- Complete Subject: "A special machine"
- Complete Predicate: "manufactures air inside the family’s home"
- Sentence with Line: A special machine | manufactures air inside the family’s home.

3. The athletic girl jumped high into the air.
- Complete Subject: "The athletic girl"
- Complete Predicate: "jumped high into the air"
- Sentence with Line: The athletic girl | jumped high into the air.

4. Many toys and games cluttered the children’s playroom.
- Complete Subject: "Many toys and games"
- Complete Predicate: "cluttered the children’s playroom"
- Sentence with Line: Many toys and games | cluttered the children’s playroom.

5. The children’s father described weather on Earth.
- Complete Subject: "The children’s father"
- Complete Predicate: "described weather on Earth"
- Sentence with Line: The children’s father | described weather on Earth.

---

#### Part C: Circle the complete predicate in each sentence.

1. The underground home contained large, comfortable rooms.
- Complete Predicate: "contained large, comfortable rooms"
- Circled Sentence: The underground home contained large, comfortable rooms.

2. The playful child rolled his ball into a hall.
- Complete Predicate: "rolled his ball into a hall"
- Circled Sentence: The playful child rolled his ball into a hall.

---

Final Answer:

- Part A: Underlined sentences as shown above.
- Part B: Sentences with lines as shown above.
- Part C: Circled predicates as shown above.

Boxed Final Answer:
\[
\boxed{\text{See detailed solutions above.}}
\]