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MODAL VERBS (Could (Use to: (To express ability of the passt., To ask…
MODAL VERBS
Could
Use to:
To express ability of the passt.
To ask permission (in interrogative
To express something possible but not probable.
Is the passt of the verb can.
Could he read...?
He couldn't read
He could read.
Example:
The modal verbs are:
Should
Must
Could
Have to
Can
Can
Use to:
Know how to do something
To express permission (with interrogation)
Can do something.
She can work.
Can she work?
She can't work
Example:
Must
Use to:
To express duty.
In afirmative.
To express prohibition.
In negative.
Also you can use to give advice.
She mustn't use
Must she use...?
She must use.
Example:
Should
Use to:
To give advice.
In afirmative and negative.
Should it go...?
It shouldn't go.
It should go.
Example:
Have to
Use to:
You don't have to do something.
In negative.
Need to do something.
In afirmative.
Have I got to read...?
I have to read.
I don't have to read.
Example:
Common characteristic:
They have to go with another verb.
They don't use auxiliary verbs for their conjugations.
They don't change in the 3r person of singular.