Practice
Name
Grammar:
Subjects
• The subject of a sentence tells what or whom the sentence
is about.
• The complete subject can have one or more words.
The buildings are tall.
The office buildings are tall.
What or whom is the sentence about? Draw a line under the
complete subject.
1. The city is my habitat.
2. The streets are busy.
3. The fast cars pass quickly.
4. The park has trees and grass.
5. Tired birds rest in the branches.
6. Squirrels hop through the park.
7. Summers get very hot.
8. Winters are cold and snowy.
9. People rush by quickly.
10. Many buses stop at the corner.
11. The deer runs through the park.
12. Trees lose their leaves.
© Macmillan/McGraw-Hill
13. Children play on the playground.
14. The bikes are on the grass.
15. The bus is crowded in the winter.
Earth Smart
Grade 3/Unit 1
11
Practice
Name
Grammar:
Subjects
• Every sentence has a subject.
• The subject of a sentence tells what or whom the sentence
is about.
Add a subject to each group of words. Use the picture below.
hopped into the water.
2.
was bright and warm.
3.
buzzed near the flowers.
4.
is orange and black.
5.
perched on the branches.
6.
drifted across the sky.
7.
kept us cool.
8.
grew on the trees.
© Macmillan/McGraw-Hill
1.
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Earth Smart
Grade 3/Unit 1
Practice
Name
Grammar:
Correct Sentences
• A fragment is a group of words that do not tell a complete
thought.
• Some sentence fragments can be fixed by adding a subject.
© Macmillan/McGraw-Hill
Change each fragment into a sentence by adding a subject from
the box. Then write the sentence correctly.
Whales
Seashells
Crabs
Plants
The ocean
Seals
Fish
The water
1.
is a habitat.
2.
grow on the ocean floor.
3.
swim in the water.
4.
dig in the sand.
5.
are the largest sea creatures.
6.
can be very cold.
7.
are found on the shore.
8.
dive into the water.
Earth Smart
Grade 3/Unit 1
13
Practice
Name
Grammar:
Subjects
• A fragment is a group of words that do not tell a complete
thought.
• Some sentence fragments can be fixed by adding a subject.
Read the paragraph about habitat below.
The ocean is a habitat. Fish make up the largest group of living things
in this habitat. come in all shapes and sizes. Be very big or very small.
Swim around. Some get their food from plants. Fish swim every day. Other
creatures also live in the ocean. like to watch them swim in the water.
© Macmillan/McGraw-Hill
Rewrite the paragraph, fixing any sentence fragments you found.
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Earth Smart
Grade 3/Unit 1
Practice
Name
Grammar:
Subjects
A. Write the subject of each sentence.
1. A habitat is where living things live.
2. Animals share their habitats with plants.
3. People have habitats too.
4. The climate is the weather in a habitat.
5. Snow is covering my habitat.
B. Choose a subject from the box that best completes each
sentence. Rewrite the correct sentence.
© Macmillan/McGraw-Hill
fish
birds
people
everyone
bears
6.
needs the right kind of habitat.
7.
live in trees.
8.
find shelter in buildings.
9.
swim in lakes and oceans.
10.
live in the woods.
Earth Smart
Grade 3/Unit 1
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