Practice
Name
Grammar:
Compound Sentences
• A compound sentence contains two related sentences
joined by and, or, or but.
• Put a comma before and, or, or but in a compound sentence.
Separate: A bird has wings. It has feathers.
Joined: A bird has wings, and it has feathers.
Combine each pair of sentences. Use a comma and the word and, or,
or but.
1. There are yellow birds. There are blue and green birds.
2. Tame birds eat special bird food. Wild birds eat insects.
3. Most birds can sing. Some birds can learn words.
© Macmillan/McGraw-Hill
4. Birds can escape from their cage. They can fly around a room.
5. A small bird can sit on your finger. It can ride on your shoulder.
My Very Own Room
Grade 3/Unit 1
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Practice
Name
Grammar:
Compound Sentences
• A sentence that contains two sentences joined by and, or, or
but is called a compound sentence.
Write a compound sentence by joining each pair of sentences.
Use a comma and the word and or but.
1. Hamsters are fun. They are easy to care for.
2. Hamsters are small. They can eat a lot.
3. Some hamsters have long hair. Some have short hair.
4. Hamsters are small. They can fit in your pocket.
© Macmillan/McGraw-Hill
5. They stuff food in their cheeks. They carry it that way.
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My Very Own Room
Grade 3/Unit 1
Practice
Name
Grammar:
Punctuate Compound
Sentences
• Two related sentences can be joined with a comma and the
word and, or, or but.
Read each pair of sentences. Use a comma and the word and to
join each pair of sentences.
1. It was time to choose a pet. It wasn’t easy.
2. First I wanted a cat. Then I wanted a dog.
3. Cats don’t need baths. They don’t need walks.
4. Dogs like to play. They can learn tricks.
© Macmillan/McGraw-Hill
5. I talked to Mom and Dad. Then we took a vote.
6. Tomorrow we are going to get a dog. We know exactly what kind.
My Very Own Room
Grade 3/Unit 1
23
Practice
Name
Grammar:
Compound Sentences
• A sentence that contains two sentences joined by and, or, or
but is called a compound sentence.
• Use a comma before and, or, or but when you join two
sentences to form a compound sentence.
Read the paragraph, and look for sentences you can combine.
Then rewrite the paragraph.
© Macmillan/McGraw-Hill
I observed my cat, Eddie. Then I studied my dog, Belle. Eddie is orange.
He weighs twenty pounds. Belle is orange, too. She weighs twelve pounds.
Both like to sleep. Both like to be in the sun. Eddie likes to chase birds. He
likes to climb. Belle likes to dig. She plays fetch. Eddie sleeps on my bed.
Belle sleeps on my floor. They are both good. They make great pets.
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My Very Own Room
Grade 3/Unit 1
Practice
Name
Grammar:
Compound Sentences
A. Write yes if two sentences have been combined. Write no if
two sentences have not been combined.
1. Some people like having pets, but some people do not want pets.
2. I would like to have more than two cats.
3. I ride my horse each day in the corral.
4. I call my dog, and then he comes to me.
B. If the sentence is a compound sentence, write compound. If it
is not a compound sentence, write no.
5. I have an aquarium and several beautiful fish.
6. I have two orange fish, but he has a zebra-striped fish.
C. Use and or or to combine each pair of sentences. Write the
new sentence on the line.
© Macmillan/McGraw-Hill
7. I can buy two new fish. I can buy four new fish.
8. I observe my fish. I learn how they live.
My Very Own Room
Grade 3/Unit 1
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