|20.1 Modal verbs - an introduction|
Modal verbs as 'to have to, may, can, shall' do not inform us about any real activity, yet. The change the meaning of the full verb or better they clarify the relationship between the subject and its activity.
He can swim.
He must swim.
He shall swim.
He may swim.
As we can see in the examples the relationship between the subject (he) and the activity (to swim) is different in every of the sentences.
Spanish modal verbs like querer
(to want to), deber
que (to have to),
poder (to be able to) were already used in this manual. Now we
should have a better look at the use of the modal verbs.
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