How is the infinitive phrase used in the sentence?
To wake up on time, set your alarm before going to bed.
a. adjective
b. adverb
c. noun as subject
d. noun as direct object

Respuesta :

The correct answer here would be B, it is used as an adverb. The whole infinitive phrase can be substituted with an adverb (or adverbial phrase) - "in order to wake up on time", with the adverbial meaning, so it is certainly not an adjective or a noun. It is a verb in the infinitive form.