A Guide to Compound Sentences (With Examples)
A compound sentence contains at least two independent clauses linked together (usually by a coordinating conjunction or semicolon).
I went to the gym, and then I had some ice cream.
Simple Sentences vs Compound Sentences
To understand the difference between simple sentences and compound sentences, let’s review some important terminology.
- Complete sentences must contain at least one subject and predicate. In the simplest terms possible, the subject of a sentence is who or what the sentence is about. The predicate states or asks something about the subject or tells it to do something (and always contains a verb).
- Independent clauses are groups of words that can stand alone as a complete sentence.
A simple sentence contains one subject and one predicate. A compound sentence, on the other hand, is made up of at least two independent clauses. In other words, a compound sentence contains two or more simple sentences joined together.
I like to dance is an independent clause because it can stand on its own as a complete sentence.
I like to do gymnastics too is also an independent clause. Because the second example contains two independent clauses, it’s considered a compound sentence.
Let’s take another look at this example:
There is technically only one subject (“I”), but it gets mentioned twice. And there are two predicates (“like to dance” and “like to do gymnastics too”).
Now, let’s rewrite the sentence.
In this case, there is only one subject—“I (mentioned once).” The predicate becomes a compound predicate. I like to dance can stand on its own as a complete sentence, but do gymnastics cannot. Because of this, the sentence ceases to be a compound sentence.
The most important thing to remember that’ll help you identify compound sentences is that they must contain at least two independent clauses.
Complex sentences contain one independent clause joined with at least one dependent (or subordinate) clause .
- Because I’m in a meeting , I’ll call you later .
As we already mentioned, compound sentences contain two or more independent clauses .
- I’m in a meeting; I’ll call you later.
How Are Compound Sentences Formed?
Compound sentences can be formed by using a semicolon or a coordinating conjunction with a comma.
Remember: The coordinating conjunctions are for, and, but, or, yet, so.
Let’s rewrite the following two simple sentences into one compound sentence:
When using a coordinating conjunction, remember to place a comma before it.
However, it’s worth mentioning that if the clauses are short and closely related, a comma is not always necessary; therefore, the following sentence is also acceptable:
If you’re not using coordinating conjunctions to link the independent clauses, you can also use a semicolon.
When using a semicolon to link two independent clauses, remember that the second clause should start with a lowercase letter (because it’s technically one complete sentence), unless it’s a proper noun.
LanguageTool’s Grammar Checker can help ensure you’re using compound sentences correctly.
Examples of Compound Sentences
Below you’ll find a few more examples of compound sentences:
Identifying Compound Sentences
It’s important to know how to identify compound sentences so that you can punctuate them correctly. Without proper punctuation, your sentences would be too long and considered run-on sentences, which drastically affects the flow of your writing.
Pauses—whether made with commas or semicolons—help your audience stay focused on your writing.
LanguageTool is a multilingual writing assistant that can ensure your text has properly punctuated compound sentences. That’s just one of the many style suggestions this advanced spelling and grammar checker can make; it can also check for use of passive voice or colloquialisms. Give it a try today.
