Master grammar with this interactive worksheet! Identify run-on sentences, fix sentence structure, and learn about coordinating conjunctions.

Every sentence must begin with _________________________.

Occurs when independent clauses are not joined properly.

Must contain a noun, verb, and adjective.

Expresses an incomplete idea and cannot stand alone as a complete sentence.

Expresses a complete idea and can stand alone as a complete sentence.

True or false: When using a semi-colon, there should be 2 independent clauses (complete sentences) on either side.

Split the sentence into 2 independent clauses using a period.

Use a semi-colon to separate the two independent clauses.

Use a comma and coordinating conjunction to separate the independent clauses.

Choose the group of words that lists coordinating conjunctions used to join independent clauses.

Which of the following is a run-on sentence?

Juan plays the violin, and his sister plays the cello.

Rita left school early to go to a doctor's appointment.

Rita left school early she went to a doctor's appointment.

How could you fix the run-on sentence? Springfield has three lights they are red.

Springfield has three lights, they are red.

Springfield has; three lights they are red.

Springfield has three lights; they are red.

How could you fix this run-on sentence? "Egypt is one of the most ancient countries it's famous for its pyramids."

Egypt is one of the most ancient countries, it's famous for its pyramids.

Egypt is one of the most ancient countries. It's famous for its pyramids.

Egypt is one of the most ancient countries it's famous; for its pyramids.

How could you fix the following run-on sentence? "Cairo is the capital of Egypt it is also the largest city in Africa, and the Middle East."

Cairo is the capital of Egypt. It is also the largest city in Africa, and the Middle East.

Cairo is the capital of Egypt, it is also the largest city in Africa, and the Middle East.

Cairo is the capital of Egypt it is also the largest city in; Africa, and the Middle East.

She planned to take the train to Vancouver the railroad bridge had been damaged.One way to correct the run‐on sentence above is ________

She planned to take the train to Vancouver, but the railroad bridge had been damaged.

She planned to take the train to Vancouver. The railroad bridge had been damaged.

Which example shows the INCORRECT way to join two independent clauses?

Engineers investigated the bridge collapse, even so they couldn't agree on a cause.

Engineers investigated the bridge collapse; they couldn't agree on a cause.

Engineers investigated the bridge collapse, but they couldn't agree on a cause.

How could you fix this run-on sentence?Happiness is the key to success if you love what you are doing, you will be successful.

Happiness is the key to success; if you love what you are doing, you will be successful.

Happiness is the key to success if you love what you are doing. You will be successful.

Happiness is the key to success if you love what you are doing; you will be successful.

How could you fix this run-on sentence?My teacher never missed a day of school I think even the flu and the common cold were afraid of that lady.

My teacher never missed a day of school I think even the flu; and the common cold were afraid of that lady.

My teacher never missed a day of school I think even the flu. And the common cold were afraid of that lady.

My teacher never missed a day of school; I think even the flu and the common cold were afraid of that lady.

How could you fix the following run-on sentence?We followed the map we ended up in Canada instead.

We followed the map, but we ended up in Canada instead.

We followed the map, so we ended up in Canada instead.

We followed the map, nor we ended up in Canada instead.

We followed the map, or we ended up in Canada instead.

How could you fix the following run-on sentence?I received an A on my Psychology test I am very happy.

I received an A on my Psychology test, and I am very happy.

I received an A on my Psychology test; I am very happy.

I received an A on my Psychology test. I am happy.

Sentence Structure & Run-On Sentences Quiz 

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