The use of auxiliary verbs

Auxiliary verbs

Sometimes it is hard to remember how to use the auxiliary verbs, the auxiliary verbs are: be, do and have, so I will let you some guidance in hoy to use it:

Auxiliary be:

a. Be is used with verb + ing to make continuous verb forms.

For example:

• You are lying 
• They were reading 
• We will be having dinner at 9 o' clock. 
• You must be joking!!

b. Be is used with the past participle to make the passive.

For example:

• These books are printed in China
• Where were you born?
• The car has been serviced 
• The City had been destroyed
• This work should be done soon.

Auxiliary Do

a. Do/does/did are used in the present simple and the Past Simple

• Do you live near Alajuela?
• He does not understand you!
• When did they arrive?

b. Do/does/did are used to express emphasis when there is no other auxiliary

• I am not interested in soccer, but I do like Basket ball
• If only he had money" He does have money!!
• Why did not you tell me? I did tell you!

Auxiliary have

Have is used with the past participle to make perfect verb forms:

• Have you ever tried sushi?
• My car had broken down  two times before
• I will have finished this paperwork soon
• I would like to have met Michael Jackson.
• Having had lunch, we cleaned up!