No. Already is an adverb.
Yes, it is an idiomatic form that can mean "nearly" or approximately. "It cost close to a million dollars." It is not a preposition because the amount already modifies the verb cost.
yes part of the verb "to be" I am he is she is it is you are we are they are
Substitute is already a verb when used in the relevant context.Other verbs are substitutes, substituting and substituted.Some example sentences are:"I will substitute the peanuts with hazelnuts"."The coach substitutes his top player"."I am substituting some ingredients with my own"."I accidentally substituted the milk for pickle juice".
It is a helping verb.
Ebbing is already a verb. There are different ways to use it, but it is already a verb.
Do already is a verb.
The verb is "are."
The verb "was" is the past tense of the verb "to be." It is used to indicate that something existed or occurred in the past.
Amplify is already a verb.
No. Already is an adverb.
"Follow" already is an action verb!
Already is not a verb and does not have a past tense.
The verb form of "situate" is "situated." For example: "The house is situated on a hill."
Smitten is already a verb. It is the past participle of smite.
Surprise is already a verb. As in "to surprise someone".
Complete is already a verb. For example, "to complete something" is an action and therefore a verb.