“To have”, “To be”, “To do”

Topic: "To have", "To do", "To be"
An auxiliary verb helps the main  verb and is also called a
"helping verb."
Using auxiliary verbs, you can write sentences in different tenses.
Auxiliary verbs are: be, do, have, will, shall, would, should, can, could, may, might, must,
ought, to name a few.
The verb forms of be, do, and have can be used either as a
main verb or an auxiliary verb.
The following examples show these verbs used as auxiliary verbs.
1. "Be" as an auxiliary verb
a. Used in progressive sentences:

• I am going shopping.

• She is clearing the table.

• They have been watching movies all night.
  

b. Used in passive sentences:

• I was given a free sample.

• He was seen by Marie at home.

• This song has been sung by all nations.
  

2."Do" as an auxiliary verb
a. Used in negative sentences:

• I do not know the answer.

• She doesn’t understand my accent.

• They didn’t go to the party.
  

b. Used in questions:

• Do you want a good grade?

• Did he finish writing the song?

• Do we need to keep going straight?
  

3."Have" as an auxiliary verb
a. Used in perfect sentences:

• I have been driving for hours.

• We have alot of work to do on the new house.

• She had been acting weird lately.
  

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