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영어/Basic Grammar in use

Modals = auxiliary verbs that express speaker's attitudes/feelings

Modals = auxiliary verbs that express speaker's attitudes/feelings.


-necessity.
-advise.
-permission - may,can
-possibility - might.
-ability = can,could

ex)

can 

could

had better

may

might

must

ought to 

shall

should

will

would.


modal + O.V

ex) 

I can it (x)

I can do it (o)

==> Past

=> modal + have + P.P

= past form of modal verb.(Just same form - different means of present perfect)

ex) He might have been at the library yesterday.


Present perfect

=> I have been at the library several times.




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