which helping verb is used in past perfect continuous tense?
Answers
Answered by
0
Answer:
be , have both can be used.
Answered by
0
Answer:
The past perfect continuous tense (also known as the past perfect progressive tense) shows that an action that started in the past continued up until another time in the past. The past perfect continuous tense is constructed using had been + the verb's present participle (root + -ing).
auxiliary verb
Similar questions