Can be the subject of a sentence?

The phrase "can be the subject of a sentence" is a bit tricky. It's not a complete sentence itself, but it can be part of a sentence.

Here's how:

* As a predicate: The phrase can function as the predicate of a sentence, describing what something *is* or *does*. For example:

* "Nouns can be the subject of a sentence."

* "The cat can be the subject of a sentence."

* As a clause: The phrase can be part of a larger clause, often acting as a relative clause. For example:

* "A sentence that can be the subject of a sentence is called a noun clause."

So, while "can be the subject of a sentence" isn't a complete sentence on its own, it can play a significant role in making a sentence grammatically correct and meaningful.