The Present Perfect Progressive Challenge!

She is still doing laundry. Present Perfect Progressive (Continues) is about action that has been started in the past and is STILL in progress at the moment of speaking.

This sample may sound strange. But laundry is all sort of activity: washing, ironing, etc and so it can take pretty much a lot of time.

It may be specific in your language. It would still be interesting if you write some sample. But in English sentence does not finish with “for” word. It can be started with “for” word like: For 3 years I have been working there. But it sounds better to use time at the end so: I have been working there for 3 years.

When you are just telling the story that follows one action after another, then Past Simple is usually used. Sample: I waited on bus station. Bus arrived. I went home.

But Past Perfect Continues is used to express activity that happened before some other activity in the past and you want to explicitly state that some activity happened before some other activity.

Sample: I had been waiting for ages (<– Past Perfect Continues) before the bus arrived (<– Past Simple).
Form: Subject + had + been + verb-ing

Future Simple is used to express some activity will happen in the future.
Sample: I will go to the cinema tomorrow.

But Future Perfect Continues is used to express activity that starts now and will continue till some event in the future happens.

Sample: To the end of the century most national resources will have been disappearing slowly by firmly.

Form: Subject + will + have + been + verb-ing

Present Perfect is used to express activity that started in the past and is still continues into the present.

Sample: I have been studying English for 5 years.
Explaining: I started 5 years ago and I am still studying it up till now.

Difference between Present Perfect Simple (Tense) and Present Perfect Continue (Progressive) is just in expressing that some activity was lasting longer time, you are focused on “lasting”.

Present Perfect Simple
Sample: I have worked at my company for 5 years.

Present Perfect Continues
Sample: I have been working at my company for 5 years.

Both above samples have very similar meaning. First is just expressing the fact. Second expression may be understood that 5 years is little bit long. Something is lasting longer.

Some verbs are more suited to be used for Simple and some for Continues and can have different meaning if used as Simple or Continue.

Sample Simple: I have finished my picture.
It means I was drawing a picture and finally (probably few seconds ago) I finished it.

Sample Continues: I have been finishing my picture.
This statement is expressing the activity is lasting. It is still not finished, but I am close to it. Activity will probably continue in the future.

Past Perfect Continues (Progressive) – please see my comment above at some other user that was asking the same question.