Tenses

Could you please tell me the difference between using preset perfect and preset perfect cont.

[Donbelid]

When you say "I've dialed his number since an hour ago" (present perfect), you mean you have dialed several times. That's all.

But when you say "I've been dialing his number since an hour ago" (P.P.C), you mean you have dialed several times and you are still dialing.

[Hayseed]

Hello Donbelid,
I think the examples you gave are awkward at best, & would offer these instead:

"I dialed his number for an hour." This implies that you aren`t necessarily attempting to dial any longer.

"I`ve been dialing his number for an hour." This implies that you are likely to continue dialing.

[Tdol]

The present perect progressive can also be used to emphasise the duration of an action- when someone arrives late we say 'I've been waithing for thirty minutes' to emphasise the length of the wait, even though it's finished.
With state verbs, it can be used to show that something is of a temporary nature.

[Donbelid]

Originally Posted by Hayseed

Hello Donbelid,
I think the examples you gave are awkward at best, & would offer these instead:
"I dialed his number for an hour." This implies that you aren`t necessarily attempting to dial any longer.
"I`ve been dialing his number for an hour." This implies that you are likely to continue dialing.

I said the same!! Nothing is awkward!

I said when you've dialed a number, you have done that several times and that's all. (means finished as you said)

And I said When you've been dialing a number, you have dialed it and you are still dialing. (meaning = it continues, as you said)

[Hayseed]

Originally Posted by Donbelid

I said the same!! Nothing is awkward!

Donbelid, using the word "since" in that context IS AWKWARD. It sounds like something a very small child (whose language skills aren`t fully developed yet) or non-native speaker (you) would say. End of discussion.