What are Primary Auxiliaries?

What are Primary Auxiliaries? :

We have referred to verbs like IS, HAVE, WILL, CAN, MAY as special verbs.

Because they behave in a different way from other verbs.

Apart from their role in the formation of negatives, questions tags, these verbs can do other things too.


1. help to form tenses….

She is reading.

He has gone out.

They will come here.

2. help to make passive forms….

The gate is opened.

My pen was lost.

3. express permission, possibility, abilty…..

You may come in. (permission)

It might rain tonight. (Possibility)

He can speak five languages. (ability)

These verbs are, therefore, called Auxiliary Verbs or Auxiliaries (auxiliary = helping)

Auxiliaries are sometimes divided into two classes. The verbs BE (is, are, am, was and were), have (has, had) and do (does, did) are called Primary Auxiliaries.

The following auxiliaries are called Modal Auxiliaries or Modals.










Ought to

Have to



Used to

Some grammarians treat all auxiliaries as Modals. All these verbs are indeed modals in that they are used to form moods or attitudes.

Business English Index

Business English Exercises Index

What are Primary Auxiliaries?

Letter Asking A Donation
Letter Asking A Favor
Letter Asking for More Details
Letter Asking for Donations
Letter Denying of Dealership
Letter for Change of Address
Letter for Distributorship
Letter for Employment
Letter for Hotel Reservation
Letter for Letter of Credit
Letter for Line of Credit
Letter for Product Launch
Letter for Promotion
Letter for Retirement Congrats
Letter for Scholarship
Letter for Settlement of Bill
Letter for Tender
Letter for Testimonial
Letter of Agreement
Letter of Assurance
Letter of Credit
Letter of Enquiry
Letter of Order
Letter of Persuasion
Letter of Sympathy
Letter Offering Discount
Letter Related to Advertisement
Letter Related to Despatch
Letter Related to Training
Letter to A Foreign Buyer
Letter to Pen-Friend
Letter to Police
Letter with Order
Letter with Quotation
Letter Writing
Letters about Company Shares
Letters by Clubs and Societies
Letters by Landlords & Tenants
Letters for Appointment of Dealers
Letters for Business Relations
Letters for Buying and Selling
Letters for Credit & Collection
Letters for Foreign Travel
Letters for Lease & Tenancy
Letters for Loan & Borrowing
Letters for Transfer & Assignment
Letters for Insurance
Letters Noting Discrepancy
Letters of Condolence & Sorrow
Letters of Regret
Letters Regarding Maintenance
Letters Regarding Payment
Letters Related to Employees
Letters to Local Corporation
Letters to Postal Authorities
Letters to The Editor
Letters Used in Real Estate
Letters With Postal Department
Letters With Railways Authorities

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