Sentence Types

Simple, Compound, Complex, Compound-Complex

Simple sentence

A sentence consisting of only one independent clause with a subject and a predicate, expressing a single complete thought.

Compound sentence

A sentence composed of at least two independent clauses joined by a coordinating conjunction (such as FANBOYS) or a semicolon.

Complex sentence

A sentence consisting of one independent clause joined with at least one dependent (subordinate) clause.

Compound-complex sentence

A sentence containing at least two independent clauses and at least one dependent clause.

Identify the sentence structure: "The curious cat leaped onto the high windowsill."

Simple sentence - Consists of a single independent clause with one subject (The curious cat) and one predicate (leaped onto the high windowsill).

Identify the sentence structure: "Maya and Liam packed their backpacks and hiked up the mountain trail."

Simple sentence - Consists of a single independent clause containing a compound subject (Maya and Liam) and a compound predicate (packed their backpacks and hiked up the mountain trail).

Identify the sentence structure: "During the severe thunderstorm, the old oak tree crashed onto the empty road."

Simple sentence - Consists of a single independent clause modified by prepositional phrases, expressing a complete thought.

Identify the sentence structure: "The power went out across the neighborhood, so we lit several candles in the living room."

Compound sentence - Consists of two independent clauses joined by a comma and the coordinating conjunction so.

Identify the sentence structure: "The museum gallery closed early for renovations; visitors were asked to exit before four o'clock."

Compound sentence - Consists of two independent clauses joined by a semicolon without a coordinating conjunction.

Identify the sentence structure: "The marathon runner was completely exhausted, yet she managed to cross the finish line with a smile."

Compound sentence - Consists of two independent clauses joined by a comma and the coordinating conjunction yet.

Identify the sentence structure: "Although the rain poured heavily throughout the afternoon, the championship soccer match continued."

Complex sentence - Consists of a dependent clause (Although the rain poured heavily throughout the afternoon) joined to an independent clause (the championship soccer match continued).

Identify the sentence structure: "The students cheered enthusiastically when the teacher announced the upcoming field trip to the science center."

Complex sentence - Consists of an independent clause joined to a dependent clause introduced by the subordinating conjunction when.

Identify the sentence structure: "The historical novel that was recommended by our librarian kept the entire book club captivated for days."

Complex sentence - Consists of an independent clause with an embedded dependent relative clause (that was recommended by our librarian).

Identify the sentence structure: "Because the alarm failed to ring, Carlos woke up late, and he missed the morning bus to campus."

Compound-complex sentence - Consists of one dependent clause (Because the alarm failed to ring) and two independent clauses joined by the coordinating conjunction and.

Identify the sentence structure: "The robotics team celebrated their victory, but they stayed focused because a tougher championship awaited them next month."

Compound-complex sentence - Consists of two independent clauses joined by but and one dependent clause introduced by the subordinating conjunction because.

Compare: Compound sentence vs. Complex sentence

Clause types: A compound sentence connects at least two independent clauses, whereas a complex sentence connects one independent clause with at least one dependent (subordinate) clause. Connectors: Compound sentences are linked by coordinating conjunctions (FANBOYS) or semicolons, while complex sentences are linked by subordinating conjunctions (e.g., because, although) or relative pronouns.

Justify why the following sentence is compound-complex: "Although the storm knocked out the power, the family remained calm, and they played board games by candlelight."

Justification: It contains two independent clauses (the family remained calm and they played board games by candlelight) joined by the coordinating conjunction and, along with one dependent clause (Although the storm knocked out the power) introduced by the subordinating conjunction although.

Refine the following simple sentences into a single compound-complex sentence: "The storm passed. The crew repaired the sails. They continued the voyage."

Refinement: "After the storm passed, the crew repaired the sails, and they continued the voyage."

Explanation: Converts the first simple sentence into a dependent clause (After the storm passed) using the subordinating conjunction after, and joins the two independent clauses (the crew repaired the sails and they continued the voyage) using the coordinating conjunction and.