Modal verbs

Modal verbs are very often used in English.It reduces the difficulties in the sentence formation.Besides it helps us to speak more fluently.Everybody should know about this.Here I explain the basics .

*It doesn't have singular  form.
e.g
It can has it(wrong)

*It doesn't have continuing forms (ing)
e.g
I canning this work(wrong)

Below are some modal verbs.
May
Might
Should
Would
Can
Could
Ought to
Have to
Need to

Next we see the uses of these vividly.

Might
It represents the less possibility .
(e.g)
I might go .
Should
It represents Recommendation.
(e.g)
They should work.
You should go to hospital

May
It has two purposes which are Permission and Strong possibility.
(e.g)
May I come in?
I may buy a car

Can
            It has two purposes such as Permission and the present ability
(e.g)
Can i use your bike?
I can drive 

Must
   It is also used for two purposes namely Responsibility and Assumption.

(e.g)
You must work hard then only you can achieve your goal.

He couldn't pay the fee ,he must be poor .

Could
  It has two purposes namely past ability and unreal ability

(e.g)
I could speak with him.
I could go,if I had time.


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