The infinitive form of "left" is "to leave."
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."
The infinitive form of had and has is to have.
"To be" is the infinitive form of are.
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].
It can be. To run is the infinitive form of the verb. It can be a noun, adjective or adverb. Examples: I was almost ready to run. - infinitive to run modifies adjective "ready" He left the senate to run for president. - infinitive to run modifies the verb "left"
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