Modal Auxiliaries

 Modal Auxiliaries and their uses –

Sr No.	Modal Auxiliary	Use
1	Can	Ability
2	Should	Advice , duty, Suggestion
3	Must	Obligation, compulsion
4	May	Permission, probability, less certainty
5	May not	Prohibition
6	Will	Certainty
7	Would, Could	Request
8	Might	Possibility

e.g.

1) I shall buy a scooter next month.

          (Idea:showing ability)

Correct form is,

I can buy a scooter next month.

2) Students may obey their parents.

          (Idea: advice)

Correct form is,

Students should obey their parents.

3) They need to be protected.

          (Idea: obligation)

Correct form is,

They must be protected.                                                   

4) You should do what your teacher tells you

          (Idea:   possibility)

Correct form is,

You might do what your teacher tells you.

5) I will teach you this lesson next month.

          (Idea: less certainty)

Correct form is,

I may teach you this lesson next month.

6) Can I Come in?

          ( Idea: permission)

Correct form is,

May I come in?

7) Will you give me a pen?

        (Idea: request)

Correct form is,

Could you give me a pen?

8) She will enter the class.

       (Idea:  prohibition)

Correct form is,

She may not enter the class.