VERBS DO BE HAVE

as an intransitive verb that replaces or refers to an ordinary verb that was in a previous clause or sentence,  for Example: You know as much as I do (=as much as I know).

as an ordinary transitive verb, for example: The students always did their homework.

as an auxiliary verb, especially for forming questions and negatives in the simple present or simple past tense, for examples: Did you enjoy the party?  She does not understand.

as an auxiliary verb to form a question tag in the simple present or past tense, for examples: You teach English, don’t you? 

I like Chinese food, but my best friend doesn’t.

My brother went to Bali. So did my sister.

They do yoga twice a week.

Are your friends doing anything this month?

I hope you’re sorry for what you’ve done.

Do you speak English?

Does the room have a bathroom?

Didn’t they tell you I was coming?

Max doesn’t live here any more.

You didn’t see my keys lying around anywhere, did you?

Mr. Terry doesn't set homework for us, does he?

They went fishing at the lake, didn't they?

Don't hesitate to practice English in the class.

Don't forget to do your homework.

Don't be afraid to make mistakes in speaking the language.

Don't disclose your ID number to anyone else.

I do remember what she asked us to do

I did lock the door after I took my belongings.

My neighbour is a good gardener. His garden does look nice.

Do be quiet!

Do help me to help you.

Do pay attention to your father.

BE is the most important verb in the English language. 

It is used as a main verb and as an auxiliary verb, and it is also used in the passive voice. 

BE is the only English verb that has three conjugations in the simple present (am | are | is). 

BE is also the only verb that has two conjugations in the simple past (was | were). 

I am a father of a daughter.

She is a nine grader.

They are students at a catholic school.

I am not a business owner.

Are they good at singing?

Where were you born?

She was a stern mother.

I am doing my job.

She is working at the office.

They are practicing English.

My brother was running his own business before he died.

The manager and his staff were having lunch when the phone rang.

Are they going abroad for business?

She is not doing laundry herself.

I am given a nice gift.

The fish is barbecued here.

The films are shown in that building.

In the past, all books were sold offline.

The school was built more than 100 years ago.

They must be out of town.

The key speaker will be answering the questions later.

The cat can be aggressive.

We shall be positive.

The farmers used to be poor.

The children might be afraid of darkness.

The employees have to be on time.

I have been working in this office for more than twenty years.

The manager has been in the position for years.

Suharto had been authoritarian for decades before he stepped down.

John and Mary hadn't been building their own house when their first child was born.

As a main verb, have is used to talk about:

states or conditions, such as possession or relationship

They have good salaries.

She doesn't have any brothers or sisters.

Do you have some money to give away?

The audience didn't have any question.

Did the students have any mistakes?

activities, including those such as eating, and leisure.

I have toast and milk for breakfast.

I always have dinner at home.

They used to have coffee after meal.

Did you have a good holiday?

The employees are having a day off.

as causative verb to replace the word "ask"

The manager had his secretary rewrite the report.

The manager had the report rewritten.

The customer is having the technician repair the broken gadget.

The customer is having the broken gadget repaired.

The tenant will have a plumber fix the leaky faucet.

The tenant will have the leaky faucet fixed.

As an auxiliary verb, have is used to make the perfect tenses of main verbs.

I have taught English for years.

Suharto had ruled the country for more than three decades before he stepped down.

Had they been waiting long before you arrived?

Has Susanna had you help to write the paper?

Have the students had their parents sign their report cards?

Have the students had their report cards signed?