Have is used both as an ordinary verb and as an auxiliary verb.
As an auxiliary verb
- She has acted in a film. (Present Perfect.)
- I have been to the US. (Present Perfect)
- Have you heard of the Unidentified Flying Objects? (Present Perfect)
- I realized that I had met him before. (Past Perfect)
- I will have finished this work by the end of this month. (Future Perfect)
Questions and negatives are made without do.
- He has gone to the market.
- Has he gone to the market? (NOT Does he have gone to the market.)
- He hasn’t gone to the market. (NOT He doesn’t have gone to the market.)
- Have you seen him before?
- No, I haven’t seen him before.
There are no progressive (having) forms of the auxiliary verb have.
- He has gone to school. (NOT He is having gone to the school.)
Have as an ordinary verb
As an ordinary verb, have is used to talk about states: possession, relationships, illnesses, personal characteristics and similar ideas.
- We have a big house in the city. (Possession)
- I have two children. (Relations)
- The applicant must have a good personality. (Personal characteristics)
- She has a nice temper. (Personal characteristics)
- I have a bad headache. (Illnesses)
- He has plenty of money, but no manners. (Possession)
Causative use of have
Getting something done by somebody else is expressed by the structure have (or get) + object + past participle.
Read the following sentences.
- I must get/have my hair cut.
- You must get/have your shoes mended.
- We must get our roof repaired.
- She got/had her son trained as a mechanic.
Rewrite the following sentences using have or get followed by a past participle.
1. My servant washes my car for me.
2. This tailor makes my clothes for me.
3. A famous architect designed our house for us.
4. My hair needs cutting.
1. I get my car washed by my servant.
2. I get my clothes made by this tailor.
3. We got/had our house designed by a famous architect.
4. I must get/have my hair cut.