have done & have been doing

[twin*MD*soul]

Hi, dear
I want you to tell What is the different between have done / have been doning
and can use the question How much with the present perfect tense? because I know that we can use how many / how long ? with present perfect
and can we use since with have been doing or only for .
How can I
Differentiate betwen these tenses
Is it correct this question How much have you seen/ read / found ?
I need the answer this night please.

Thanks

 

[IvanV]

I think this will do:

Present Perfect
Present Perfest Continuous

As for the ''how much'' part, I'd have to see what do you really mean by that. It is possible to make a construction of that kind, but please be specific.

Regards