There are four types of clauses that are used to create sentences. Sentences with several clauses, and different types of clauses, are considered complex. This lesson will cover (1) independent clauses, (2) dependent clauses and subordinate clauses, and (3) coordinate clauses.
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An independent clause is a simple sentence. It has a subject, a verb, and expresses a complete thought.
Two independent clauses can be connected by a semicolon. There are some common words that indicate the beginning of an independent clause such as: moreover, also, nevertheless, however, furthermore, consequently.
A dependent clause is not a complete sentence. It has a subject and a verb but does not express a complete thought. Dependent clauses are also called subordinate clauses, because they depend on the independent or main clause to complete the thought. A sentence that has both at least one independent clause and one subordinate clause are considered complex.
Subordinate clauses can be placed before or after the independent clause. When the subordinate clause begins the sentence, there should be a comma before the main clause. If the subordinate clause ends the sentence, there is no need for a comma.
Dependent clauses also have common indicator words. These are often called subordinating conjunctions because they connect a dependent clause to an independent clause. Some of these include: although, after, as, because, before, if, once, since, unless, until, when, whether, and while. Relative pronouns also signify the beginning of a subordinate clause. These include: that, which, who, whom, whichever, whoever, whomever, and whose.
A coordinate clause is a sentence or phrase that combines clauses of equal grammatical rank (verbs, nouns, adjectives, phrases, or independent clauses) by using a coordinating conjunction (and, but, for, nor, or so, yet). Coordinating conjunctions cannot connect a dependent or subordinate clause and an independent clause.
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