No, rich is not a verb. But enrich is a verb, and 'to enrich' is its infinitive.
infinitive of tired
This probably refers to the absence or presence of the infinitive marker "to." In the sentence "I must go" the infinitive ( "go") lacks the marker, while in the sentence "I want to go" the infinitive has it.
Infinitive: to finish
"to eat" is an infinitive.
An infinitive phrase. An infinitive phrase is a noun phrase with an infinitive as its head. Unlike the other noun phrases, however, an infinitive phrase can also function as an adjective or an adverb.
An infinitive phrase uses the "to" form of a verb, used as a noun (subject, object), a subject complement, an adjective, or an adverb. The infinitive phrase includes the object or modifiers of the infinitive.Examples:To completely relax is often difficult for him. (to relax is the subject, to completely relax is the infinitive phrase)He sometimes tries to win the lottery. (to win is the object of tries, to win the lottery is the infinitive phrase)His ambition is to become rich. (to become is the subject complement, to become rich is the infinitive phrase)He lacks the experience to succeed in business. (to succeed is an adjective for experience, to succeed in business is the infinitive phrase)He was disappointed to lose the race (to lose is an adverb for disappointed, to lose the race is the infinitive phrase)
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.
The word jogging is not simply an infinitive. An infinitive is [to + a verb]. To jog would be an infinitive.
The infinitive "to read" is a bare infinitive.
The infinitive form of "was" and "were" is "to be." The infinitive form of "are" is also "to be."
So is not an infinitive. An infinitive is [to + a verb].
The infinitive form of "is am are" is "to be."
Infinitive is the basic form of a verb. "Let" is the infinitive in this case.
The classes are: auxiliary verbs and ordinary verbs. the infinitive of have is to have the infinitive of be is to be the infinitive of do is to do the infinitive of can is to be able the infinitive of must is to have to the infinitive of dare is to dare