The function that infinitives play in each of the given sentence is as follows:
Janine studies to improve her math skills. - Adverb
Our plan to win the race includes training every day. - Adjective
To find a job can be difficult. - Noun
'Infinitives' are described as the 'non-finite verbs that are framed using to + base form of the verb.'
- The infinitives can be placed in any sentences irrespective of its tense without any change. They can play multiple roles in a sentence depending on its placement in it.
- In the given three sentences, the first sentence employs infinitive 'to improve' as an adverb in order to describe the verb 'studies.'
- While in the second sentence, it('to win') functions as an adjective because it modifies/describes the noun 'Our plan.'
- In the last sentence, it becomes a subject('to find a job') on being linked with the noun 'a job.'
- Thus, it can play several roles by just varying its placement across the sentence.
Learn more about 'infinitives' here:
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