There are only four types of sentences in English. This page will show you the formula for each type so that later we can discuss how to understand any sentence in the English language, even if it looks long and scary!
Simple Sentences
A simple sentence is the most basic type of sentence. It consists of one independent clause, which is a group of words that contains a subject and a verb and expresses a complete thought. It may also include an object and modifiers, but crucially, there will not be more than one independent clause.
Example:
- He organized his sources by theme.
In this example, “He” is the subject, and “organized” is the verb. The phrase “his sources by theme” includes the object and modifiers, providing additional detail about the action.
Compound Sentences
A compound sentence is formed by joining at least two independent clauses. These clauses can be connected in a couple of ways: with a comma followed by a coordinating conjunction (such as and, but, for, nor, or, so, or yet), or with a semicolon which directly links the two related independent clauses.
Example:
- They studied for many hours, but they realized there was still a lot to learn.
Here, “They studied for many hours” and “they realized there was still a lot to learn” are both independent clauses connected by the coordinating conjunction “but”. Each clause can stand alone as a simple sentence, demonstrating the independence and completeness of the ideas.
Complex Sentences
A complex sentence ou distinguished by having one independent clause and at least one dependent (or subordinate) clause. Dependent clauses often begin with subordinators like because, since, which, if, or although.
- When starting a sentence with a dependent clause, you should use a comma after this clause. In contrast, if the sentence starts with an independent clause, you don’t need the comma to separate them.
Examples:
- Although she had already completed the course, she still needed to work on her writing skills.
- She still needed to work on her writing skills although she had already completed the course.
In these examples, the clause “Although she had already completed the course” depends on the main clause to form a complete idea, making it a dependent clause, and is marked by a comma when it starts the sentence.
Compound-Complex Sentences
The most sophisticated sentence type is the compound-complex sentence. It combines elements from both compound and complex sentences. This type of sentence includes at least two independent clauses and at least one dependent clause.
Example:
- Although she was tired from studying all night, Maria managed to complete her assignment, and she even reviewed it one more time before submitting it.
In this example, we have a dependent clause “Although she was tired from studying all night” introducing the sentence, and two independent clauses “Maria managed to complete her assignment” and “she even reviewed it one more time before submitting it,” which are joined by the coordinating conjunction “and.”