viernes, 1 de agosto de 2008

Present Perfect Continuous

1.- We form the Present Perfect Continuous like this:


Positive

Full Form and Short Form

I/you/we/ they have or 've
been cooking.

She/he/it Has or 's
been cooking.

Negative
Full Form and Short Form

I/you/we/they Have not or haven't
been cooking.

She/he/it Has not or hasn't
been cooking

Question


Have I/you/we/they been cooking?
Has She/he/it been cooking?


2.- We use the Present Perfect Continuous for an action or situation that began
in the past continues until now:

You're late! I've been waiting for you.

We often use for and since Present Perfect Continuous. We use for a period of
time, and since with a point in time:

I've been waiting for you for two hours
I've been waiting for you since six o' clock


3.- Here are some more examples:

Julia has been talking on the phone for an hour
(= She started talking on the phone an hour ago and she is still talking.)

You've been sitting there since one o' clock
( = You started sitting there at one o' clock and you are still sitting there.)

4.- We use the Present Perfect Continuous for an actions that are done many times
in a period of time from the past until now:

She's been having driving lessons for a couple of months.
(= she started a couple of months ago; she is still having lessons.)

I've been playing tennis since I was a small child.

5.- We can use How long ...? with the Present Perfect Continuous:

How long have been living here?
I living here for three years.



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