Definitions and Examples of Basic Sentence Elements
The Mastering the Mechanics webinar series also describes required sentence elements
and varying sentence types. Please see these archived webinars for more information.
Key: Yellow, bold = subject; green underline = verb, blue, italics = object, pink, regular
font = prepositional phrase
Independent clause: An independent clause can stand alone as a sentence. It contains
a subject and a verb and is a complete idea.
o I like spaghetti.
o He reads many books.
Dependent clause: A dependent clause is not a complete sentence. It must be attached
to an independent clause to become complete. This is also known as a subordinate
clause.
o Although I like spaghetti,…
o Because he reads many books,…
Subject: A person, animal, place, thing, or concept that does an action. Determine the
subject in a sentence by asking the question “Who or what?”
o I like spaghetti.
o He reads many books.
Verb: Expresses what the person, animal, place, thing, or concept does. Determine the
verb in a sentence by asking the question “What was the action or what happened?”
o I like spaghetti.
o He reads many books.
o The movie is good. (The be verb is also sometimes referred to as a copula or a
linking verb. It links the subject, in this case the movie, to the complement or the
predicate of the sentence, in this case, good.)
Object: A person, animal, place, thing, or concept that receives the action. Determine
the object in a sentence by asking the question “The subject did what?” or “To
whom?/For whom?”
o I like spaghetti.
o He reads many books.
Prepositional Phrase: A phrase that begins with a preposition (i.e., in, at for, behind,
until, after, of, during) and modifies a word in the sentence. A prepositional phrase
answers one of many questions. Here are a few examples: “Where? When? In what
way?”
o I like spaghetti for dinner.
o He reads many books in the library.
English Sentence Structure
The following statements are true about sentences in English:
A new sentence begins with a capital letter.
o He obtained his degree.
A sentence ends with punctuation (a period, a question mark, or an exclamation
point).
o He obtained his degree.
A sentence contains a subject that is only given once.
o Smith he obtained his degree.
A sentence contains a verb or a verb phrase.
o He obtained his degree.
A sentence follows Subject + Verb + Object word order.
o He (subject) obtained (verb) his degree (object).
A sentence must have a complete idea that stands alone. This is also called an
independent clause.
o He obtained his degree.
Simple Sentences
A simple sentence contains a subject and a verb, and it may also have an object and
modifiers. However, it contains only one independent clause.
Key: Yellow, bold = subject; green underline = verb, blue, italics = object, pink, regular
font =prepositional phrase
Here are a few examples:
She read.
She completed her literature review.
He organized his sources by theme.
They studied APA rules for many hours.
Compound Sentences
A compound sentence contains at least two independent clauses. These two
independent clauses can be combined with a comma and a coordinating conjunction or
with a semicolon.
Key: independent clause = yellow, bold; comma or semicolon = pink, regular font;
coordinating conjunction = green, underlined
Here are a few examples:
She completed her literature review, and she created her reference list.
He organized his sources by theme; then, he updated his reference list.
They studied APA rules for many hours, but they realized there was still
much to learn.
Using some compound sentences in writing allows for more sentence variety.
Complex Sentences
A complex sentence contains at least one independent clause and at
least one dependent clause. Dependent clauses can refer to the subject (who, which)
the sequence/time (since, while), or the causal elements (because, if) of the independent
clause.
If a sentence begins with a dependent clause, note the comma after this clause. If, on
the other hand, the sentence begins with an independent clause, there is not a comma
separating the two clauses.
Key: independent clause = yellow, bold; comma = pink, regular font; dependent clause
= blue, italics
Here are a few examples:
Although she completed her literature review, she still needed to work on her
methods section.
o Note the comma in this sentence because it begins with a dependent
clause.
Because he organized his sources by theme, it was easier for his readers to
follow.
o Note the comma in this sentence because it begins with a dependent
clause.
They studied APA rules for many hours as they were so interesting.
o Note that there is no comma in this sentence because it begins with an
independent clause.
Using some complex sentences in writing allows for more sentence variety.
Compound-Complex Sentences
Sentence types can also be combined. A compound-complex sentence contains at
least two independent clauses and at least one dependent clause.
Key: independent clause = yellow, bold; comma or semicolon = pink, regular font;
coordinating conjunction = green, underlined; dependent clause = blue, italics
She completed her literature review, but she still needs to work on her
methods section even though she finished her methods course last semester.
Although he organized his sources by theme, he decided to arrange them
chronologically, and he carefully followed the MEAL plan for organization.
With pizza and soda at hand, they studied APA rules for many hours, and they
decided that writing in APA made sense because it was clear, concise, and
objective.
Using some complex-compound sentences in writing allows for more sentence
variety.
Pay close attention to comma usage in complex-compound sentences so that the
reader is easily able to follow the intended meaning
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