Question

what are the auxilliary verbs of the past perfect continuous tense?​

Answer 1

Answer:

For the past perfect continuous or progressive the past perfect form of the auxiliary verb 'to be' (which is 'had been') is required and combined with the continuous form (ing-form / present participle) of the corresponding main verb. It often appears in connection with the if-clause type III and the indirect speech .

Answer 2

Answer:

▶ An auxiliary verb is a verb that adds functional or grammatical meaning to the clause in which it occurs, so as to express tense, aspect, modality, voice, emphasis, etc. Auxiliary verbs usually accompany an infinitive verb or a participle, which respectively provide the main semantic content of the clause.

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