Modal verbs and Modal auxiliary verbs

[zoobinshid]

Hello everyone,
Would you please tell me the difference between ( Modal verbs and Modal auxiliary verbs ).

Thanks in advance,

[Roro]

Hello zoobinshid,
These sites, among others, look helpful:
http://www.bartleby.com/64/C001/014.html
http://webster.commnet.edu/grammar/auxiliary.htm
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You asked what's the difference between Modal verbs and Modal auxiliary verbs. I think that these two terms are not mutually exclusive. Modality has to do with necessity and possibility (of various types, epistemic, deontic, volitive, for example). And there are various expressions which can express modality explicitly. Verb phrase (with or without modal auxiliaries), adjectival phrases, sentence adverbs, some constructions ...
(I'd like to understand 'Modality' as such a notional category. My view is simplistic, but is based on, namely Angelika Kratzer's view (hopefully).
This is what I thought. Others may disagree, though !

[Tdol]

They're often used interchangeably, or by different people to refer to the same family. In ESL books, you'll find one or the other being used for our old friends will/would/may, etc.