Types of Sentences (Simple Sentences)

I believe that a writer must know how to define simple, compound, and complex sentences before they can use them correctly. Once a writer knows how to write a simple sentence, it will be easier to write both compound and complex sentences. With these three sentence types, it is possible to write good essays, with good sentence variety.


A simple sentence contains a subject and a predicate, and it expresses a complete thought. In the following simple sentences, subjects are in yellow, and predicate are in green.

A. Some students like to study late at night.
B. Johan and Ali play football every evening.
C. Alicia goes to the library and studies every day.

The three examples above are all simple sentences. Note that sentence B contains a compound subject (Johan and Ali), and sentence C contains a compound verb (goes to the library and studies) in the predicate. Simple sentences, therefore, contain a subject and verb and express a complete thought, but they can also contain a compound subjects or verbs.