Present Perfect Continuous

Nice exercises:
http://www.englishexercises.org/makeagame/viewgame.asp?id=1484

Tempo verbal formado com:

To have + particípio passado do verbo to be + verbo principal no gerúndio (-ing):

I have been doing

Indica que uma  acção ou estado iniciado no passado que se continua a desenrolar no momento presente. É comum, nesse caso, expressar também desde quando (since...) ou há quanto tempo (for...) essa acção se está a desenvolver:

It have been doing my homework since yesterday evening.

negativa:
 

Full Form		Short Form
I have not been doing		I haven't been doing
you have not been doing		you haven't been doing
he she it	has not been doing	he she it	hasn't been doing
we have not been doing		we haven't been doing
you have not been doing		you haven't been doing
they have not been doing		they haven't been doing

na interrogativa:

Full Form have I been doing? have you been doing? has he she it been doing? have we been doing? have you been doing? have they been doing?

SONG:

We must have been stone crazy
when we thought we were just friends,
'Cause I miss you, baby,
And I've got those feelings again.
I guess I'm all confused about you,

I feel so in love
Oh, baby, what can I do?
I've been thinking about you.
I've been thinking about you
I've been thinking about you
I've been thinking about you, shi-pow-pow!

Suddenly we're strangers,
I watch you walking away.
She was my one temptation,
Oh, I did not want her to stay
Deep down, I'm still confused about you

I feel so in love
Oh, baby, what can I do?
I've been thinking about you.
I've been thinking about you
I've been thinking about you
I've been thinking about you, shi-pow-pow!