Below are the corrected sentences for the grammar worksheet on the history of dogs as pets.
Use this key to check the answers for your students.
1. The dog is believed to have been domesticated thousands of years ago. They were first used as hunting companions.
Corrected Sentence:
"The dog is believed to have been domesticated thousands of years ago. They were first used as hunting companions."
2. In ancient times, dogs lived in packs and were useful in many ways, including protecting humans.
Corrected Sentence:
"In ancient times, dogs lived in packs and were useful in many ways, including protecting humans."
3. Dogs began to be bred for specific purposes, such as guarding herds, guarding homes, and pulling sleds. They became more domesticated.
Corrected Sentence:
"Dogs began to be bred for specific purposes, such as guarding herds, guarding homes, and pulling sleds. They became more domesticated."
4. People domesticated dogs as early as 15,000 years ago. They helped early humans hunt.
Corrected Sentence:
"People domesticated dogs as early as 15,000 years ago. They helped early humans hunt."
5. Dogs, who are known to be loyal companions, can also help in therapy, and they assist people with disabilities.
Corrected Sentence:
"Dogs, who are known to be loyal companions, can also help in therapy, and they assist people with disabilities."
6. Today, dogs are considered part of the family in many cultures because of their long history as pets and workers.
Corrected Sentence:
"Today, dogs are considered part of the family in many cultures because of their long history as pets and workers."
7. While some dogs were bred for herding, others were bred for protection.
Corrected Sentence:
"While some dogs were bred for herding, others were bred for protection."
8. The first evidence of domesticated dogs dates back to around 12,000 years ago, but there is also evidence suggesting they were tamed much earlier.
Corrected Sentence:
"The first evidence of domesticated dogs dates back to around 12,000 years ago, but there is also evidence suggesting they were tamed much earlier."
9. Dogs are still used for work in many parts of the world, especially in rural areas.
Corrected Sentence:
"Dogs are still used for work in many parts of the world, especially in rural areas."
10. Dogs have evolved alongside humans. They have adapted to living in a wide variety of environments.
Corrected Sentence:
"Dogs have evolved alongside humans. They have adapted to living in a wide variety of environments."