In English an infinitive is the "to" form of a verb, like "to say" or "to do" A gerund is the "ing" form, like "saying" or "doing"
noun, adjective, and adverb
AdVerb
To help you
'are' is part of the infinitive verb 'to be.' (i am, you are, he/she is, we are, they are). Yes, 'are' could be classed as a verb
Infinitive: to finish
finish the complete infinitive phrase is "to finish mowing the yard".
"to finish your test" is the infinitive phrase.
(to finish)
The infinitive is an adverb modifying an adjective (happy). BREAK DOWN: YOU (subject) ARE (verb) HAPPY (predicate adjective) TO FINISH YOUR TEST (adverbial phrase for happy) TEST (the object of the infinitive)
"To finish your test," is an infinitive phrase. It can be used as an object in this example. The goal is to finish your test. The phrase is used as a noun.
I chose to skip happily with Emily down to the river.
adverb
The infinitive form of "am" is "to be," the infinitive form of "is" is "to be," and the infinitive form of "was" is "to be."
you are derives from the infinitive of to be. The infinitive that belongs to 'you are' is 'to be'.
The infinitive form of had and has is to have.
"To be" is the infinitive form of are.