Question

Does the following sentence have an antecedent? If so, where?: Steve works very hard, unfortunately Sam does not do the same.

Answer 1

the same

Explanation:

"The same" refers to works.

The same is an adjective and pronoun too.

By grammar morphology, we can say we can use adjective too as it refers to previous noun---works.

Like, he is extraordinary.
We know in general situation adjective modifies noun before putting itself. But adjective could be put after the main verb and noun,like--here is, it indicates the noun that is previously indicated---he, pronoun usage, a noun/pronoun, both noun/pronoun could be subject and object.

Hope you understand the morphology.