May I ask two more questions to you, PaulMatthews?
1) EFL teachers tend to include 'determiner' as a part of speech. Is it fair to say that most schools of grammar do not do that?
2) What part of speech is, say, the word this? Is it also seen as a pronoun, but with identical dependent and independent forms. How about articles? What part of speech is the word the?
(Apologies to the OP and anyone else following this thread for my sidetracking.)