Auxiliary Verb is also known as Helping Verb. It helps the Main Verb to describe the Past, Present and Future actions in the sentence. It is used to form Tense, Mood or Voice of other verb. There are two types of Auxiliary Verbs-

Primary Auxiliaries
     (Modify other verbs in a full verb phrase)
     To be: am, is, are, was, were, being, been, will be

     To have: have, has, had, having, will have
     To do: do, does, did, will do
Modal Auxiliaries:
     (Change the meaning of other verbs)
     can, could, shall, should,
     will, would, may, might,
     must, ought to,
     used to, need to,
     dare to, have to


Modal Auxiliary Verb is a verb which is used to indicate mode or modality. It connects with another verb to demonstrate a Mood or Tense. It affects the meaning of other verb in different situations.



(ability, possibility, permission, request)
     Smith can speak several languages.
     It can rain heavily tonight.
     You can present your slideshow.
     Can I use your phone, please?

COULD: (possibility, ability, suggestion, request, permission)
     We could visit the hospital tomorrow.
     George could handle the situation skillfully.
     You could support your sister now.
     Could you book one ticket for me?
     You could use calculator to solve the sum.

SHALL: (futurity, suggestion, promise, threat, determination, obligation, prohibition)
      I shall leave for Canada tomorrow.
      Shall I help you to write the blog?
     I shall support you forever.
     You shall be taken to police station.
     Clara shall overcome all problems.
     You shall sanitize your hands first.
     They shall not smoke at public places.

(moral duty, obligation, advice, suggestion, assumption, expectation)
     We should support COVID-19 victims.
     Students should attend lectures regularly.
     You should take care of your health.
     George should eat apple every morning.
     We should reach Washington by 4 pm.
     You should read the terms and conditions.

WILL: (futurity, request, determination, promise, refusal, willingness)
      My brother will talk to him.
      Will you fill this form first?
      Smith will run 10 kms every morning.
      I will support your family.
      I will never support you for doing wrong things.
      I will invest $5000 in stock market.

WOULD: (past habit/routine, wish/willingness, polite offer/desire, conditional, consequence, request)
      We would go to beach every Sunday.
      I would attend today’s online class.
      I would give you 5 percent discount on this book.
      If I were a doctor, I would give free treatment.
      If he comes late, father would scold him.
     Would you please wear a mask?

MAY: (possibility, permission, request, wish, polite offer)
       It may rain in the afternoon.
      May I ask a question?
      You may sit there for 10 minutes.
      May God give you a strength!
      May I order one more book for you?

(possibility, suggestion, conditional, permission, request)
      Final exams might be late this year.
…..James might concentrate spelling mistakes.

      If he studied hard, he might pass the test.
      You might attend the meeting tomorrow.
      Might I use your pen for signature?

MUST: (compulsion, obligation, determination, advice, threat, intention, necessity, prohibition)
      You must isolate at home until report comes.
…..We must follow the medical guidelines.
…..Ryan must stand first in Mathematics.
…..Henry must avoid fast foods.
…..I must throw you out of the window.
…..We must submit our CV tomorrow.
…..Doctors must check their oxygen level daily.

     You must not park your car here.

OUGHT TO: (expectation/advice, probability, obligation, guess)
      You ought to wake up earlier.
…..Jack ought to get first salary next month.

     We ought to protect our environment.
     The vaccination ought to start next week.

HAVE TO/HAS TO: (certainty, compulsion, duty, obligation, necessity)
…..Leo has to pay a tax on it.
     You have to sign the agreement first.
     Students have to keep the campus clean.
     We have to respect our nation.
     Evan has to look after his mother.

USED TO: (past habit, past existence)
     We used to stroll on green meadows.
     There used to be a palace here.

NEED TO: (necessity, obligation)
     We need to contact his uncle now.

     You need to respect respect your teachers.

DARE TO: (courage)
      I dare to walk in forest at night.






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