Auxiliary Verbs & Their Types
Auxiliary (helping) verbs support the main verb. There are primary auxiliaries (be, do, have) and modal auxiliaries (can, will, must, should…).
| Auxiliary | Use | Example |
|---|---|---|
| be | continuous / passive | She is working. |
| do | questions / negatives | Do you know? |
| have | perfect tenses | They have finished. |
| modals | mood / meaning | You must go. |
She is reading. (be)
He doesn't like it. (do)
We have eaten. (have)
Primary auxiliaries (be/do/have) can also be main verbs; modal auxiliaries only ever help another verb.
Common mistake: Forgetting the auxiliary in questions/negatives: "You know him?" → "Do you know him?"
✏️ Test Yourself
1. She **has** eaten.
2. You **should** rest.
3. They **are** playing.
4. He **can** swim.
📒 Words to learn
Meaning — To call upon a higher power for help or to use a law/principle in an argument.
“He invoked his right to remain silent during the investigation.”
Meaning — Giving the impression that something bad is about to happen.
“The ominous clouds suggested a storm was coming.”
Meaning — To become aware of or recognize something.
“She perceived a change in his attitude.”
Meaning — Capable of being touched or perceived by touch; clear and definite.
“There was no tangible evidence to support his claim.”
Meaning — 1. Noun: An attempt to achieve a goal. 2. Verb: To try hard to achieve something.
“1. The startup was a challenging endeavor. 2. She endeavored to succeed despite the odds.”