Some Sentences Using Perfect Perfect and Present Perfect Continous

  Perfect Perfect and Present Perfect Continuous

According to my researches Present Perfect must be used when: 

1) Actions started in the past and continuing in the present:
We have lived in Sapporo for eleven years.

2) When the time period referred to has not finished:
It has rained a lot this year.

3) Actions repeated in an unspecified period between the past and now:
We have eaten at that restaurant many times.

4) Actions completed in the very recent past (+just):
Have you just finished work?

5) When the precise time of the action is not important or not known:
She has studied Japanese, Russian and English.

Structure:  Subject+ have/has+ P.P.


These are some examples made by my own:
-I can't be late to the date with my girlfriend. I've promised to be on time.
-Bob has failed the Chemistry exam although he studied a lot.
-We have been to Puerto Rico three times this year.
-You have had too much time to finish your essay, however you haven't started it yet.

Perfect Perfect Continuous

This construction is used for ongoing action in the past that continues right up to the present or has recently finished:

1. Professor Atilano has been waiting for IDI-223 students to start the class.
2. Leonela and I have been attending classes to Santo Domingo.
3-We have been studying for the English test.
4-Have you been looking for a job recently?

Structure: Subject+ have/has+ P.P.C