First, refer to different
1, see ... Regard as: consider ...
Regard ... as ... as: regard ... as.
Second, the usage is different.
1, please refer to ... as: The basic meaning of see refers to "seeing" in the general visual sense, and it can also refer to "observing" consciously, and extension can refer to "understanding" and "understanding" from observation.
Regard ... as ... as: Seeing basically refers to treating someone or something as a person or thing after knowing it, that is, "recognizing it".
Third, the emphasis is different.
1, see ... as: This is subjective.
Take ... as ... As: This is objective.
Extended data
See can also be followed by as phrase, infinitive, noun, gerund, adjective, adverb, prepositional phrase or present participle, and the past participle acts as the compound object of complement. When you use infinitive as complement, you don't use to, but if you use it in passive structure, you can't omit to.
When see is followed by a present participle or a verb infinitive to form a compound object, the present participle represents an active and ongoing action of the object (mostly the current thing), sometimes it can represent a part of an action process or a state; The infinitive of verbs focuses on a complete process (mostly referring to the past) and represents an event. When see is followed by the past participle of the verb as the compound object of complement, it indicates the state and contains passive meaning.
See can be used as a copula followed by adjectives as predicates.
When see means "see", it is a verb to express perception. Usually, can see and could see are used to mean "see (at that time)", not the ordinary present tense or continuous tense. The progressive aspect can be used in the interpretation of "meeting" and "sending".