Question

what is rule for present perfect continuous tense​

Answer 1

Answer:

We make the Present Continuous tense by adding -ing to the base verb. Normally it's simple: we just add -ing. But sometimes we have to change the word a little.Note that continuous tenses are also called progressive tenses.

Formula for writing in the present continuous is: 'be' verb [am, is, are…] + present participle.

hope it helps you

Answer 2

The present perfect continuous tense (also known as the present perfect progressive tense) shows that something started in the past and is continuing at the present time. The present perfect continuous is formed using the construction has/have been + the present participle (root + - ing).

Example

I have been reading War and Peace for a month now.

In this sentence, using the present perfect continuous verb tense conveys that reading War and Peace is an activity that began sometime in the past and is not yet finished in the present (which is understandable in this case, given the length of Tolstoy’s weighty tome).

Recently and lately are words that we often find with verbs in the present perfect continuous tense.

Example

Mia has been competing in flute competitions recently. (And she will continue to do so.)

Example

I haven’t been feeling well lately. (And I am still sick now.)

Example

Have you seen my wallet and keys recently? (Because I sure don’t know where they are.)

Of course, not all verbs are compatible with continuous action. Some examples of such verbs are to be, to arrive, and to own.

Incorrect

I have been owning my Mazda since 2007.

Correct

I have owned my Mazda since 2007. (present perfect tense)

Incorrect

Gus has been being late for work recently.

Correct

Gus has been late for work recently. (present perfect tense)

Hope it helps you !!