Forms of Helping Verbs
We use helping verbs (auxiliary verbs) with main verbs. The tables on this page show the forms of all helping verbs.
There are 2 groups of helping verbs:
1. Primary helping verbs
We use primary helping verbs to change the tense or voice of the main verb, and to make questions and negatives. There are only three primary helping verbs: do, have, be. These verbs can also function as main verbs. When we use them as helping verbs, here are the forms that we use:
|base||3rd person singular present simple||past simple|
|present participle||past participle|
- Do you like him?
- He does go home sometimes.
- I did not see her.
- They have finished their homework.
- Has he arrived yet?
- John had not called for three weeks.
- They will be eating when we arrive.
- I am feeling sick.
- Are you working at the moment?
- Jo is not watching TV.
- Tara was cooking when I phoned.
- Were you expecting me?
- My car is being repaired.
- I have been working all day.
2. Modal helping verbs
We use modal helping verbs to change the "mood" of the main verb. As you see, modal verbs have only one form each. They never change.