find the infinitive

Adam, try to be on time in the morning.

What do think the answer is?

Infinitives normally have "to" as the beginning with a word after it. Think about it. What do you think now?

The word after "to" is always a verb.

"To go" is an infinitive.
"To me" is a prepositional phrase.

To find the infinitive in a sentence, you need to look for the base form of the verb, usually preceded by the particle "to." In the given sentence, the infinitive is "to be." The particle "to" is followed by the base form of the verb "be." So, the infinitive in the sentence is "to be."