The three auxiliary verbs in English are be, do, and have.
Be
Be is used with a verb~ing to make continuous forms. All continuous sentences need the auxiliary verb, be.
- The man is educating us with his experience and wisdom. (present continuous)
- She was relying too much on her parents' money when she started university. (past continuous)
- I have been saving my photos in this album. (present perfect continuous)
- He will be contributing by helping to make dinner. (future continuous)
- The lights are off in their house. They must be sleeping. (infinitive continuous)
Be is also used with past participles to make passive sentences.
- She is being educated by a wonderful teacher. (present continuous passive)
- The body was preserved by special medical techniques. (past simple passive)
- The house has been destroyed. (present perfect passive)
- My car will be repaired this weekend. (future passive)
- Your homework needs to be done before class. (infinitive passive)
Do
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