Auxiliary Verbs "Be", "Do", "Have"
An auxiliary verb helps the main (full) verb and is also called a "helping verb."
With auxiliary verbs, you can write sentences in different tenses, moods, or
voices. Auxiliary verbs are: be, do, have, will, shall, would, should, can,
could, may, might, must, ought, etc.
- I think I should study
harder to master English.
- I am having a cup of coffee.
- You have been practicing
- It was written by a
- You may choose what you
The verb forms
of be, do, and have can be used either as a main (full) verb or an
auxiliary verb. The following examples show these verbs used as auxiliary
"Be" as an auxiliary verb
a. Used in progressive sentences:
- I am taking a bath.
- She is preparing dinner for us.
- They have been studying all night.
b. Used in
- I was given a free meal.
- He was seen by fans at the airport.
- This song has been sung by all
"Do" as an auxiliary verb
a. Used in negative sentences:
- I do not know the truth.
- She doesn’t agree with me.
- They didn’t arrive here yet.
b. Used in
- Do you want to have another one?
- Did he finish his homework?
- Do we need to keep going straight?
"Have" as an auxiliary verb
a. Used in perfect sentences:
- I have been following you for a
- We have done a lot so far.
- She had been queen of the town.