The world-famous author will autograph her books at the mall this afternoon. What is the role of "author" in the sentence?

Answer

The word "author" is the simple subject of the sentence.

and Explanation:

The subject of a sentence is its topic - what the sentence discusses.

In the sentence "The world-famous author will autograph her books at the mall this afternoon," the complete subject is "the world-famous author". A complete subject includes the simple subject and any modifiers accompanying it. In this case, "author" is the simple subject, that is, the main word that refers to what or whom the sentence is about.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.