Definition of a Complete Sentence
A complete sentence contains a subject and a predicate. First, let me clarify some of these terms. A subjectis the main noun or pronoun that the sentence is about. The predicate contains the main verb that either demonstrates the subject's action or is linking the subject to another noun or adjective in the predicate (as in a linking verb). Not only does the predicate contain the verb, but it also contains complements, which are any words that modify or accompany the verb. In order for a sentence to be complete, it must have at least one subject and one predicate. Another word for a complete sentence is an independent clause.
The opposite of a complete sentence would be an incomplete sentence, or a fragment. Usually, a fragment is missing one of these necessary components (a subject or a verb) and is not an independent or complete thought. It generally doesn't make any sense. In addition, another opponent to the complete sentence is the run-on sentence. Unlike the fragment, the run-on contains both a subject and a verb; however, it usually consists of multiple sentences crammed together. It goes on and on and on without proper punctuation or conjunctions to help join ideas.
Examples of Complete Sentences
I love writing in complete sentences.
- The subject is 'I. '
- The predicate is 'love writing in complete sentences.'
- The main verb is 'love.'
- Let's look at another one.
Complete sentences are important in writing.
- The subject is 'complete sentences.'
- The predicate is 'are important in writing.'
- The main verb is 'are.'
- Now, let's looks at some incomplete sentences.
Examples of Fragments
Writing in complete sentences.
This sentence is a fragment because it is missing a subject or a predicate. This fragment could work as part of the predicate (as in 'I am writing in complete sentences') or as the subject ('Writing in complete sentences is important').
Important in writing.
This is not a sentence. Besides the fact that there is no verb, it just doesn't make any sense. What is important in writing? Why? It doesn't make sense because it is missing 'something,' which is the predicate or verb.
Complete sentences are.
Are what? This sentence technically has a main noun ('sentences') and a verb ('are'), but it is lacking the rest of its predicate. Since 'are' is a linking verb that links the subject to a noun or adjective in the predicate, it needs that word to follow 'are' in order to be a complete sentence. It needs a complement.