The verbs which are used to help the main verbs to form tenses, interrogative statements, passive forms, negative statements are called Auxiliary verbs.
- is, am, are, was, were, have and do are examples of auxiliary verbs.
Usage of Auxiliary Verb
1) In the formation of the continuous tenses:
- I am going to America.
- You are singing so well.
- I was waiting for you.
- He was making tea.
- It is taking a lot of time.
- They were playing in the playground.
2) in the formation of passive verb forms
- He was horrified by the incident.
- The players were appreciated by the board.
- I was made to do so.
Auxiliary verbs are used to form sentences indicating a plan, an agreement, an arrangement or a command.
- I am to meet a matrimonial prospect today.
- I was about to leave.
- He was to be married last month, but his dead passed away.
- You are to teach him at home.
Auxiliary verb ‘Have’
Usage of auxiliary verb‘have’:
1) in the formation of the perfect tenses
- He has gone to London.
- I have reached home.
- I have been longing for this opportunity.
2) with the infinitive to indicate obligation
- I have to take him home, though I don’t wish to.
- I have to cook food to avoid mom’s anguish.
- I had to cook food to avoid mom’s anguish (obligation in past)
3)In the formation of interrogative and negative statements:
- Does she want to come with us? (interrogative)
- She does not want to come with us. (Negative)
- Do they want to come with us? (interrogative)
- They don’t want to come with us. (Negative)
- Did I want to come with you? (interrogative)
- No I didn’t want to come with you. (Negative)
Important: In interrogative and negatives statement, ‘have to’ and ‘had to’ are used with ‘do, does and did.’
Modal Verbs: Modal verbs are placed before main verbs to express ideas such as permission, possibility, certainty and necessity.
- The verbs can, could, may, might, will, would, shall, should, must and ought are examples of Modal Verbs.
Important: Need and dare are also sometimes used like modal verbs.