Auxiliary Verb + Another Verb
We use compound verbs to create all the tenses in English.
To understand better what compound verbs are, look at the below examples (compound verbs are in bold).
1. Most of the protestants were arrested shortly after. (Past Simple)
arrested—past participle of arrest.
2. He will drive you to the airport after the dinner. (Future Simple)
3. The mother was looking lovingly at her child. (Past Continuous)
looking—present participle of look.
4. I have been waiting here for half an hour! What happened?! (Present Perfect Continuos)
have and been—auxiliary verb.
waiting—present participle of wait.
5. By the next year, we will have been married for 30 years. (Future Perfect)
will and have—auxiliary verb.
been and married—past participle of be and marry.