3.2 Sentence Variety, Combining & Syntactic Flow

Sentence Variety, Combining & Syntactic Flow

Quick Summary: A common defect in college writing is syntactic monotony—the repetitive stacking of uniform, short Subject-Verb-Object (SVO) sentences. On the CLEP College Composition exam, revision questions require you to combine fragmented or repetitive clauses into sophisticated, hierarchically arranged sentences using appositives, participial phrases, relative clauses, and adverbial subordination without introducing dangling modifiers or comma splices.

Sentence variety is not merely an ornamental stylistic flourish; it is a rhetorical tool that reflects cognitive hierarchy. When all sentences are identical in length and structure, every idea appears to carry identical significance. Skilled writers use varied sentence structures to signal to the reader which ideas are central claims, which are supporting evidence, and which are background qualifications.

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1. The Four Fundamental Sentence Structures

To manipulate sentence variety effectively, you must readily recognize the four structural categories of English sentences:

1. Simple Sentence: Contains one independent clause (one subject-predicate pair that expresses a complete thought) and no dependent clauses.
   • Example: The archival historian examined the fragile parchment under ultraviolet illumination.
2. Compound Sentence: Contains two or more independent clauses joined by a comma and a coordinating conjunction (the FANBOYS: for, and, nor, but, or, yet, so) or by a semicolon.
   • Example: The laboratory results were inconclusive, so the senior investigator ordered a secondary trial.
3. Complex Sentence: Contains one independent clause and at least one dependent (subordinate) clause introduced by a subordinating conjunction (because, although, since, if, while, whereas) or a relative pronoun (who, which, that).
   • Example: Although the archaeological expedition faced persistent monsoon rains, the team uncovered an intact mosaic.
4. Compound-Complex Sentence: Contains at least two independent clauses and at least one dependent clause.
   • Example: When the Federal Reserve raised baseline interest rates, mortgage applications plummeted, but commercial lending remained resilient.

The Problem of "Choppy" Prose

When an unedited draft relies exclusively on simple sentences, the prose sounds childish and disjointed. Consider this choppy draft:

• The chemist noticed a precipitate. The precipitate was unexpected. She immediately halted the titration. She recorded the anomaly in her laboratory notebook.

Reading four successive simple sentences with identical subject-verb rhythms creates a dull, halting cadence. Combining these clauses clarifies the cause-and-effect chronology and emphasizes the primary discovery.

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2. Sentence-Combining Techniques Tested on the CLEP

The CLEP exam frequently presents two or three discrete sentences and asks you to select the most effective combined version. Four core techniques dominate these questions:

Technique A: Participial Phrases

A participle is a verb form acting as an adjective. Present participles end in -ing (analyzing, observing), while past participles typically end in -ed, -en, or -t (discovered, written, built). Participial phrases compress an entire predicate into an adjectival modifier.

CHOPPY DRAFT:    The botanist hiked through the cloud forest. She discovered a new orchid species.

COMBINED (Participle): Hiking through the cloud forest, the botanist discovered a new orchid species.
                       └─────────────────────────────┘  └───────────┘
                             participial phrase            subject

Grammar Warning — The Dangling Modifier Trap: When opening a sentence with a participial phrase, the noun immediately following the comma must be the agent performing the action of the participle. If you write, "Hiking through the cloud forest, a new orchid species was discovered by the botanist," the orchid is grammatically performing the hike, creating an absurd dangling modifier error that examiners regularly test.

Technique B: Appositive Phrases

An appositive is a noun or noun phrase that sits adjacent to another noun to rename, clarify, or amplify it. Appositives eliminate repetitive "to be" clauses and compress descriptive background into economical parenthetical units.

• Choppy: Dr. Jonas Salk developed the first successful polio vaccine. He was a renowned medical researcher at the University of Pittsburgh.
• Polished Appositive: Dr. Jonas Salk, a renowned medical researcher at the University of Pittsburgh, developed the first successful polio vaccine.

Technique C: Relative Clauses

A relative clause begins with a relative pronoun (who, whom, whose, which, that) and attaches directly to an antecedent noun. This subordinates secondary information while preserving its descriptive precision.

• Choppy: The telescope was launched into low Earth orbit in 1990. It has captured deep-space images that revolutionized modern cosmology.
• Polished Relative Clause: The telescope, which was launched into low Earth orbit in 1990, has captured deep-space images that revolutionized modern cosmology.

Technique D: Adverbial Subordinate Clauses

Novice writers frequently chain clauses together with the coordinating conjunction and or so, which treats all propositions as equally important. Replacing coordination with adverbial subordination explicitly defines the logical relationship—whether of concession (although, even though), cause (because, since), condition (if, unless), or time (when, after, while).

• Weak Coordination: The museum curator identified the canvas as a forgery, and the board withdrew it from the auction block.
• Precise Subordination: After the museum curator identified the canvas as a forgery, the board withdrew it from the auction block.

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3. Varying Sentence Beginnings and Syntactic Rhythm

When every sentence in a paragraph opens with the subject ("The author argues... She claims... The evidence shows..."), reader fatigue sets in. To create dynamic syntactic rhythm, writers deliberately vary sentence openings:

1. Prepositional Phrase Openers:
   • Standard: The constitutional delegates convened behind closed doors in the summer of 1787.
   • Inverted Opener: In the summer of 1787, behind closed doors, the constitutional delegates convened.
2. Adverbial Clause Openers:
   • Standard: Vaccination rates climbed steadily once public health officials addressed neighborhood misinformation.
   • Subordinate Opener: Once public health officials addressed neighborhood misinformation, vaccination rates climbed steadily.
3. Infinitive Phrase Openers:
   • Standard: The engineering team reinforced the bridge abutments to withstand Category 5 hurricane surges.
   • Infinitive Opener: To withstand Category 5 hurricane surges, the engineering team reinforced the bridge abutments.
4. Rhetorical Inversion:
   • Placing the predicate before the subject creates dramatic emphasis or smoothly links backward to a preceding concept.
   • Example: Down the marble corridor echoed the footsteps of the bailiff.

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4. Cumulative (Loose) vs. Periodic Sentences

The positioning of the main clause relative to its modifiers defines two powerful rhetorical tools tested on collegiate writing exams:

CUMULATIVE (LOOSE) SENTENCE:
[Main Independent Clause]  ──►  [Modifying Phrases and Subordinate Details]
"The expedition established base camp, exhausted by the altitude, battered by gale winds, and running low on fuel."

PERIODIC SENTENCE:
[Subordinate Clauses and Modifiers]  ──►  [Main Independent Clause at Period]
"Exhausted by the altitude, battered by gale winds, and running low on fuel, the expedition established base camp."

Rhetorical Differences:

• Cumulative Sentences: State the core predication immediately, then unpack a natural cascade of descriptive details, examples, and qualifications. Cumulative sentences mimic the natural flow of thought and are ideal for clear, explanatory, and narrative academic prose.
• Periodic Sentences: Withhold syntactic completion and meaning until the final words before the period. By suspending the main idea, periodic sentences generate intellectual tension, suspense, and formal climactic weight. They are especially effective in persuasive thesis statements and concluding paragraphs.

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5. Sentence Combination Strategies Summary