John has just developed the ability to convert a declarative sentence (e.g., "I like pizza") into both a question (e.g., "Do I like eating pizza?") and an imperative (e.g., "I must eat pizza!"). This would indicate that he now is aware of

Question

Quizplus · Accepted Answer

Transforming a sentence into different grammatical forms, such as turning a declarative sentence into a question or an imperative, is a principle of transformational grammar. Therefore, John's ability indicates an understanding of transformational grammar.

John Has Just Developed the Ability to Convert a Declarative