Understanding Sentence Structure
Complete Sentences
Overview of Sentences
Sentences are built from clauses, which are foundational components in the structure of English grammar.
Definition of a Clause
A clause is a grammatical unit that consists of a subject and a predicate.
Types of Clauses
Independent Clauses
An independent clause (also known as a main clause) is a clause that can stand alone as a complete sentence.
Characteristics:
Can serve as its own sentence.
Can combine with other clauses to form more intricate sentences.
Definition: An independent clause represents the simplest form of a complete sentence.
Dependent Clauses
A dependent clause (or subordinate clause) is an incomplete thought and cannot function as a standalone sentence.
Formation: A dependent clause is created by attaching a subordinating conjunction to an independent clause.
Subordinating Conjunctions
Subordinating Conjunctions are specific words that connect dependent clauses to independent clauses. They can be remembered using the acronym SWABI, which stands for:
Since
When
After
Because
If
Note: There are many other subordinating conjunctions beyond those outlined in SWABI.
List of 50 Subordinating Conjunctions
after
although
as
as if
as long as
as much as
as soon as
as though
because
before
even
even if
even though
if
if only
if when
if then
inasmuch
in order that
just as
lest
now
now since
now when
now that
once
provided
provided that
rather than
since
so that
supposing
than
that
though
till
unless
until
when
whenever
where
where if
wherever
which
whether
who
whoever
why
now that
after they drank the fruit punch
Organizing Sentences Based on Clauses
The organization of sentences can be viewed through the perspective of clauses:
IC represents an independent clause, a simple sentence.
IC + IC forms a compound sentence.
IC + DC creates a complex sentence.
IC + IC + DC results in a compound-complex sentence.
Types of Sentences
Simple Sentences
A simple sentence consists solely of one independent clause.
Examples:
Dave is allergic to cats.
Aardvarks frighten me.
Chainsaws are hard to juggle.
Compound Sentences
A compound sentence is formed by joining two independent clauses using a coordinating conjunction (often remembered with the acronym FANBOYS, which includes for, and, nor, but, or, yet, so).
Additionally, semicolons can be used to connect the clauses.
Examples:
Sara is taller than Sue, and Fred is shorter than everyone.
My dog chases cars all day, but he is still fat.
Complex Sentences
A complex sentence consists of an independent clause and one or more dependent clauses connected to it.
Examples:
While I was driving, I saw a dinosaur on the side of the road.
Since he is allergic to dogs, he doesn’t own any pets.
Compound-Complex Sentences
A compound-complex sentence is composed of two independent clauses alongside one or more dependent clauses.
Example:
Although I like