Question

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Which sentence has an infinitive or infinitive phrase that functions as a direct object?



To see their work, visit the campgrounds in Death Valley.


In 1933, legislation was passed to establish the Civilian Conservation Corps.


Their first task was to build barracks and other permanent structures.


Because of the Great Depression, these men needed to work.

Answer 1

Sentence 4.

"To work" is the infinitive and functions as the direct object of the verb "needed."

(For comparison: sentence 1’s "To see their work" is adverbial/purpose; sentence 2’s "to establish the Civilian Conservation Corps" is purpose; sentence 3’s "to build barracks…" is a predicate nominative/complement after the linking verb "was.")