Resume of Model Auxiliaries and Similar Expressions.

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Using resume of model auxiliaries and similar expressions.

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Most of the model auxiliaries have more than one meaning.
A model auxiliary is a helping verb.
It comes in front of the simple form of a verb.
The verbs below are call "model auxiliaries."
Can, could, may, might, should, had better, must, will, would.
They are followed by the simple form of a verb.
NOTICE: They are not followed by to. The main verb does not have a final -s.
The main verb is not in a past form. The main verb is not its -ing form.
Model auxiliary, meaning and example.
(A) Model auxiliary : can. 
Using can to express ability. My mother can play the guitar very well.
Using can to express polite question. Can you please help me?
Using can to express permission. Can I use your mobile phone? 
Yes, you can use my mobile phone.
(B) Model auxiliary: could.
Using could to express past ability. My son could walk when he was one year old.
Using could to express polite question. Could you please open the window?
Using could to express present possibility. Sonia is not in class. She could be sick.
Using could to express future possibility. Look at those dark. It could start raining.

          Read More:  Preferences.

          (C) Model auxiliary: may.

Using may to express present possibility. It may be sunny today.
Using may to express future possibility. It may rain tomorrow.
Using may to express polite question. May I borrow your pen?
Using may to express permission. May I have (eat) a cookie? 
Okay, you may have a cookie.
(D) Model auxiliary: might.
Using might to express present possibility. Do not wait for me. I might be late
Using might to express future possibility. It might snow tomorrow.
(E) Model Auxiliary: should. 
Using should to express good advice, good idea.

You are sick. You should see a doctor.

I am confused about my appointment. I should confirm about it.

(F) Model auxiliary: had better.

Using had better to express urgent warning advice. 

You are driving fast! You had better slow down.

 Your dog does not eat food. You had better call the vet.

(G) Model auxiliary: must.

Using must to express necessity. People must obey traffic laws. 

You want to travel abroad. You must have a passport.

(H) Model auxiliary: will.

Using will to express future happening. 

My parents will meet us at the airport tomorrow evening.

(I) Model auxiliary: would. 

Using would to express polite question . Would you please close the door?

SIMILAR EXPRESSIONS TO MODEL AUXILIARIES:

have to /has to, have got to, had to, ought to, be able to, be going to.

The simple form of a verb is used with above auxiliaries.

Model auxiliary meaning and example.

(J) Model auxiliary: have to/has to. 

Using have to /has to to express necessity. 

We have to pay rent on the first of the month. I have to leave now. 

He has to pay rent on the first of the month. He has to leave now.

(K) Model auxiliary: have got to. 

Using have got to to express necessity. you are married or not, 

you have got to include your personal information. I have got to study tonight.

(L) Model auxiliary: had to. 

Using had to to express past necessity. You were married or not, 

you had to include your personal information. You had to study last night.

(M) Model auxiliary: ought to. 

Using ought to to express good advice, good idea. 

Nandini is sleepy. She ought to go home and take a nap. 

My clothes are dirty. I ought to wash them.

(N) Model auxiliary: be able to. 

Using be able to to express ability. I am able to sing a song. 

She is able to dance. They are able to run a mile.

(O) Model auxiliary: be going to.

Using be going to to express future happing. 

Bandy is going to visit his friends tomorrow morning. 

I am going to buy a diamond ring next week on Sunday.

You are going to get a good dinner tomorrow night.