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Zorluk: ZorCommas with Lists, Clauses, and Coordinate Adjectives

Choose the alternative that best punctuates the underlined portion of the sentence.

Although the chemists synthesized a dense, dark, metallic compound that was stable at room temperature; they could not determine its catalytic properties.

  1. A
    NO CHANGE
  2. dense, dark metallic compound that was stable at room temperature, they could notCevap
  3. C
    dense, dark metallic compound, that was stable at room temperature, they could not
  4. D
    dense, dark metallic compound that was stable at room temperature. They could not

Cevap

The correct option is 'dense, dark metallic compound that was stable at room temperature, they could not', which correctly uses a comma between coordinate adjectives, leaves cumulative adjectives and restrictive clauses unpunctuated, and uses a comma to join the introductory dependent clause to the main clause.
The correct option properly uses a comma between the coordinate adjectives 'dense' and 'dark' while omitting a comma before the cumulative adjective 'metallic'. It correctly leaves the restrictive relative clause 'that was stable at room temperature' unpunctuated. Finally, it uses a comma to separate the introductory dependent clause from the main independent clause.

Adım Adım Çözüm

1
Analyze the adjectives modifying the noun 'compound'.
The adjectives 'dense' and 'dark' are coordinate (can be reversed or joined by 'and') and require a comma. The adjective 'metallic' is cumulative with 'compound' (creates a single unit) and should not be preceded by a comma.
Coordinate adjectives require commas to separate them, whereas cumulative adjectives do not.
2
Evaluate the punctuation around the relative clause 'that was stable at room temperature'.
No commas should surround the relative clause 'that was stable at room temperature'.
The clause is restrictive because it defines which compound is being discussed, and restrictive clauses are not set off by commas.
3
Identify the correct punctuation at the boundary between the two clauses.
A comma is needed after 'temperature' to join the dependent clause to the independent clause.
The sentence begins with the subordinating conjunction 'Although', making the first clause dependent. An introductory dependent clause must be followed by a comma when joined to the main independent clause.

Anahtar Kavram

Punctuating coordinate vs. cumulative adjectives, restrictive clauses, and introductory dependent clauses.
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Konular

Commas with Lists, Clauses, and Coordinate Adjectives

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