Can a noun clause be used as direct and indirect subject?

You're on the right track! Here's a breakdown of how noun clauses can function as both direct and indirect subjects:

Direct Subject:

* A noun clause acts as the direct subject when it performs the action of the verb. It answers the question "Who?" or "What?" in relation to the verb.

Example:

* What you said surprised me.

* "What you said" is the noun clause acting as the direct subject of the verb "surprised."

Indirect Subject:

* A noun clause functions as the indirect subject when it receives the direct object of the verb. It answers the question "To whom?" or "For whom?"

Example:

* The teacher gave whoever answered the question correctly a prize.

* "Whoever answered the question correctly" is the noun clause serving as the indirect subject. It receives the direct object "a prize."

Important Note:

* While a noun clause can be the direct subject, it can't simultaneously be the indirect subject in the same sentence. This is because there can only be one direct and one indirect subject in a sentence.

Let me know if you'd like more examples or have any further questions!