Primary and Modal Verbs Important Rules

Hey Aspirants, We know English section is a bottleneck for many aspirants and because of this weakness they did not able to crack the competitive exams like BANK PO/Clerk, SBI PO/ Clerk, SSC CGL/ CHSL etc. This is the Verb Part 3  on Primary and Modal Verbs Important Rules.

Types of Verb:


Primary verb
Primary verb

RULE NO. #2:

modal verbs
Modal verbs

RULE NO. # 3: 

Modal verbs does not affected by Number or Person of the subject. After Modal verb we always use first form of the verb.


  • They must follow the guidelines.
  • You can pass this exam.
  • He may come anytime.


RULE NO. #: 4

Modal verbs does not take TO after it except Ought and Used.


  • Rakesh could to pass this examination. ( Incorrect)
  • Rakesh could pass this examination.  ( Correct)
  • Ramesh ought respect the rules.  ( Incorrect)
  • Ramesh ought to respect the rules.  ( Correct)

RULE NO. # 5: 

We can’t use two modal verbs in a sentence without any conjunction.


  • Rishi can should do this work.  ( Incorrect)
  • Rishi can do this work.  ( Correct)
  • Rishi should do this work.  (Correct)
  • Rishi can and should do this work.  ( Correct)

RULE NO. # 6: 

Both Need and Dare works as Modal and Main Verbs. But as Modal verb they generally used in negative or interrogative sentences.


  • He need not call him.
  • He dare not face his parents.

RULE NO. #7: 

In a sentence when do / does / did dose not  come before Dare, we must not use TO after it ( Dare)


  • He dare not to face his parents.  ( Incorrect)
  • He dare not face his parents.  ( Correct)

RULE NO. #8: 

In a sentence when do / does / did comes before Dare we must use TO after it  ( Dare)


  • He does not dare face his parents.  ( Incorrect)
  • He does not dare to face his parents.  ( Correct)

RULE NO. #9: 

In a sentence when do / does / did comes before Need, we must use TO after it  ( Need ). But in affirmative sentences we do not follow this structure.


  • He need not to call him.  ( Incorrect)
  • He need not call him.  ( Correct)
  • He need be cautious.  ( Incorrect)
  • He needs to be cautious.  (Correct)
  • He does need to be cautious.  ( Correct)

RULE NO. #10: 

As a main verb Dare means a challenge and Need means necessity.


  • They need more time to think.  ( Correct)
  • He ate 12 Samosa for a dare .   ( Correct)
  • He needs/need more time to think. ( Which one is correct tell in comment section )

If you have any problem or did not understand any rule or example then you can watch this video on subject verb agreement rules where it was explained thoroughly and in Hindi.

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Anil Singh
Anil Singh

Please upload next part, you have fantastic style to learn English.
Thanks for this type of initiative.