It is uncanny how many books will insist that neither 'many' nor 'much' can be used in positive sentences.
- Have you got many pens? / Have you got much money? --> correct
- I haven't got many pens. / I haven't got much money. --> correct
- I have got many pens. / I have got much money. --> INCORRECT
And yet, those same books will invariably have a text where - lo and behold - 'many' is used in a positive sentence!
I can only guess that proper grammar rules are as dictated, but every day use has drifted considerably from the said rule.
So I ask you: what is the real usage of 'many'. Has it become common in any type of sentence? Or are there situations when 'many' can be used in positive sentences and situations when it can't? Because I really don't know what to say when the students point at a text and say it isn't following the rule they are supposed to follow.