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Zorluk: ZorParallel Structure

In their 2024 investigation of thermoelectric materials, materials scientist Dr. Aris Thorne and his research team demonstrated that doping bismuth telluride crystals with selenium not only significantly enhances the compound’s electrical conductivity but also ________. Which choice completes the passage so that it conforms to the conventions of Standard English?

  1. A
    to reduce its thermal conductivity
  2. B
    significantly reducing its thermal conductivity
  3. reduces its thermal conductivityCevap
  4. D
    its thermal conductivity is reduced

Cevap

reduces its thermal conductivity
The correct option maintains parallel structure in the sentence. The sentence uses the correlative conjunction 'not only... but also'. The phrase following 'not only' begins with 'significantly enhances' (a third-person singular verb). To be parallel, the phrase following 'but also' must also begin with a third-person singular verb. The option beginning with 'reduces' satisfies this requirement.

Adım Adım Çözüm

1
Analyze the sentence structure and locate the parallel elements.
The sentence contains the correlative conjunction 'not only... but also'. The first element following 'not only' is the verb phrase 'significantly enhances the compound's electrical conductivity'. The subject is 'doping bismuth telluride crystals with selenium'.
Identifying the grammatical parts of the correlative comparison helps determine the required structure of the second element.
2
Determine the grammatical form of the first element.
The first element uses the active, present-tense, third-person singular verb 'enhances' to agree with the singular gerund subject 'doping'.
Parallel structure requires the element following 'but also' to have the same grammatical form as the element following 'not only'.
3
Evaluate the choices to find the one that matches this grammatical form.
The choice containing 'reduces' is the only option that uses an active, present-tense, third-person singular verb.
Using 'reduces' aligns the second part of the sentence with 'enhances' to form a grammatically parallel structure.

Anahtar Kavram

Parallel Structure with Correlative Conjunctions
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Konular

Parallel Structure

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