Choose the sentence with the correct use of commas.

Question

BlackTom AI · Accepted Answer

Coordinate adjectives are adjectives of equal rank that independently modify a noun, so they require a comma (or the word "and") between them. Here, "funniest" and "sweetest" each directly describe "first-grader," and they are coordinate.

1. Relevant knowledge points and concepts
- Coordinate adjectives: adjectives that separately modify the same noun and can be joined by "and" or have their order swapped; they are separated by commas.
- Cumulative adjectives: adjectives that build on each other in a specific order and are not separated by commas.
- Tests for coordinate adjectives: (a) Insert "and" between the adjectives; (b) Swap their order. If either test yields a natural phrase, the adjectives are coordinate and should be separated with a comma.

2. Step-by-step reasoning
- Apply the "and" test: "the funniest and sweetest first-grader" — this reads naturally, so the adjectives act independently.
- Apply the order test: "the sweetest, funniest first-grader" — this also reads naturally, confirming they are coordinate.
- Therefore a comma is required between "funniest" and "sweetest".

3. Intermediate checks
- Option 1: "Lillian is the funniest, sweetest first-grader I’ve met." — comma between coordinate adjectives: correct.
- Option 2: "Lillian is the funniest sweetest first-grader I’ve met." — no comma between coordinate adjectives: incorrect.
- Option 3: "Lillian is the funniest, sweetest, first-grader I’ve met." — extra comma between the last adjective and the noun: incorrect. You should not put a comma between the final adjective and the noun it modifies.

4. Why the correct answer is correct
Because "funniest" and "sweetest" are coordinate adjectives, a comma is required between them but not after "sweetest." Option 1 follows this rule.

5. Why other options are incorrect
- Option 2 omits the required comma between coordinate adjectives.
- Option 3 inserts an unnecessary comma between the adjective and the noun.

Conclusion: The correct sentence is "Lillian is the funniest, sweetest first-grader I’ve met." This matches the provided answer.

Choose the sentence with the correct use of commas.单项选择题

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