Bueno

) PRESENT PERFECT CONTINUOUS
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Se forma el Present Perfect Continuous con:

SUJETO + HAVE / HAS BEEN + ... -ING

I have been working. (He estado trabajando)
Youhave been working. ((Ud.) Ha estado trabajando)
He has been working. ((él) Ha estado trabajando)
She has been working. ((ella) Ha estado trabajando)
It has been working. ((ello) Ha estadotrabajando)
We have been working. (Hemos estado trabajando)
You have been working. ((Uds.) Han estado trabajando)
They have been working. ((ellos) Han estado trabajando)

A esta forma verbal inglesatambién se le suele llamar Present Perfect Progressive.

Esta forma verbal CONECTA EL PRESENTE Y EL PASADO. Gráficamente sería algo como:

PAST - - - - - - - - - - - - - - - - - - - - - PRESENT
. . .X ==> Present Perfect Contin. ==> X
. . . | She has been driving for an hour |
((ella) Ha estado conduciendo durante una hora)

b) PAST PERFECT CONTINUOUS
============================Se forma el Past Perfect Continuous con:

SUJETO + HAD BEEN + ... -ING

I had been working. (Había estado trabajando)
You had been working. ((Ud.) Había estado trabajando)
He had been working.((él) Había estado trabajando)
She had been working. (ella) Había estado trabajando)
It had been working. ((ello) Había estado trabajando)
We had been working. (Habíamos estado trabajando)
You hadbeen working. ((Uds.) Habían estado trabajando)
They had been working. ((Ellos) Habían estado trabajando)

A esta forma verbal inglesa también se la conoce como Past Perfect Progressive.

Estaforma verbal se usa para hablar acerca de algo que había estado en progreso hasta el pasado. Gráficamente sería algo como:

Earlier PAST - - - - - - - - - PAST - - - - - - - - - - - - PRESENT
.X=> Past Perfect Contin. => X
.> She had been driving for an hour (Earlier PAST)
.>>>>>>>>>>>>>>>>> when her car broke down (PAST)

(ella)...