No, although "on a perfect day" could be an adverb prepositional phrase.
Perfect is an adjective and day is a noun.
The adverb of perfect is perfectly.An example sentence is: "I will arrange the flowers perfectly".
No. "Perfect" is an adjective. It is also a verb, though pronounced differently. "Perfectly" is the adverb form.
No, it is an adverb. It is the adverb form of the adjective perfect.
perfect is an adjective perfection is a noun perfected/ perfecting/ will perfect/ perfects are verbs perfectly is an adverb
No. Day is a noun, meaning daytime or a period of time. The adverb is daily.
The past perfect tense of see is had seen. Not is an adverb.
Had not met is past perfect. Not is an adverb and does not change from one tense to another.
the next day
No, it is the simple past tense of to have, or part of the past perfect tense.
"often" is an adverb, it doesn't have a tense.
No. The word have is a verb, or a helper verb to form perfect tenses.
"Perfect" can be either a verb or an adjective: "His hair was perfect!" {adjective} "You need to perfect this poem before submitting it for publication. {verb}