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MODAL VERBS (ARE SPECIAL VERBS (They do not change in the 3rd person…
MODAL VERBS
ARE SPECIAL VERBS
- They do not change in the 3rd person singular.
- They need to be accompanied by another verb, which is always in its formbase, without the "to" particle. ("Work" ... No "to work").
- They do not use auxiliary verbs for their conjugations.
Can - Can't
It is a type of a modal verb, when we use the modal verb csn, we always have to put anothe verb more: work (to work).
Negative
I can't work, Ypu can't work, He can't work etc
Interrogative
Can I work?, Can you work?, Can he work? etc
Afirmative
I can work, You can work, He can work etc
Uses of the CAN verb:
To express the ability or ability to do something. Knowing how to do something (She can swim very well)
To express the possibility of doing something. Can do something. ( You can go to the cinema.
You can study this for tomorrow.)
To express permission. Can do something. (It is used a lot in interrogative) (Can I help you?, Can I go to the bathroom?
Could - Couldn't
It is the past of the modal verb can. It is used to express something possible but unlikely. (I could be at home.) We can also use it to request permission in interrogative phrases. (Could you help me, please?)
Negative
I couldn't read, You couldn't read, He couldn't read etc
Interrogative
Could I read...?, Could You read...?, Could He read...? etc
Afirmative
I could read, You could read, He could read etc
Have to - Don't have to
The use of this modal verb in its affirmative form (have to) implies that it is necessary
do something. In its negative form (don't have to) it indicates that there is no need to do something.
Negative
I don't heve to read, You don't heve to read, He don't have to read etc
Interrogative
Have I got to read...?, Have You got to read...?, Have He got to read...? etc
Afirmative
I have to read, You have to read, He have to read etc
Should - Shouldn't
We use this modal verb to give advice or indicate what should be done, both
in affirmative as in negative. (You should wear glasses.
You should not be here.)
Negative
I shouldn't go, You shouldn't go, He shouldn't go etc
Interrogative
Should I go...?, Should You go...?, Should He go...? etc
Afirmative
I should go, You should go, He should go etc
Must - Mustn't
In affirmative it usually expresses the obligation or strong need to do something, because it means "duty." (You must
use the diskette.) In negative express prohibition, something
that is not allowed do what.(You must not use the phone.) It is also used to give tips. (You must not give up.)
Negative
I mustn't use, You mustn't use, He mustn't use etc
-
Afirmative
I must use, You must use, He must use etc