modal verb by ANTONIO LAURIÑO AND ARTURO.

our web page is http://www.elearnenglishlanguage.com/.
It is a page that explain all the modals´ verbs´ conjugation.The modal verbs are :
-can/could
-may/might
-shall/should
-will/would
-must/ought to
we learn that the modal verbs express different tipes of the verb:
-posibility
-ability
-necessity,etc.
The structure is: subject+modal verb+principal verb. Example:they can run
in the question the structure is: modal verb+subject+principal verb. Example: can you make a question?
different modal verbs:
-can indicates possibility and ability.example:javi can help you.
-could indicates possibility and ability in the past.Example: I could have told you that.
-May indicates an action that it pass in the future. Example:I may go to the park.
-shall indicates an intention or an action in the future.Example:I shall close the door for you.
-must indicates obligation.Example:you must go to school.
-should indicates an advice.Example:you should go to the dentist.