An infinitive is to plus a verb form. It can be used as an adjective. Examples: to be, to see, to be seen, to be eaten.
An infinitive phrase is made up of an infinitive and any complements (direct objects, predicate nominatives, predicate adjectives, or modifiers) like the gerund. An infinitive phrase that comes at the beginning of the sentence is always followed by a comma and modifies the subject of the sentence.
Instructions: Find the infinitive phrases in these sentences and tell what word they modify.
1. Your idea to spend the day together sounds great.
2. Joe is the man to see about the job.
3. We have no reason to doubt your sincerity.
4. This must be the best route to take.
5. Your attitude is the best attitude to have.
–For answers scroll down.
1. to spend the day together modifies idea
2. to see about the job modifies man
3. to doubt your sincerity modifies reason
4. to take modifies route
5. to have modifies attitude
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