Present Perfect Continuous Tense

A verb which shows the action which began in the past and still going on is called Present Perfect Continuous Tense

Formation:

Subject "+" have been or has been "+" ing form of verb..

I "+" have been"+" writing.

We "+" have been"+" writing.

He "+" has been"+" writing.

Conjugation:
1. I have been writing.

2. We have been writing

3. You have been writing. (Singular)

4. You have been writing. (Plural)

5. He has been writing.

6. She has been writing.

7. It has been writing.

8. They have been writing.

9. John has beeen writing.

10. Boy has been writing.

11. She has been writing.

Remember:
I, we, you, they take plural verb have been.

He, she, it, name and singular noun takes verb has been.

Present Perfect Continuous Negative Sentences:

Formation:

Subject "+" have not been or has not been "+" ing form of verb.

1. I have not been writing.
2. We have not been writing
3. You have not been writing. (Singular)
4. You have not been writing. (Plural)
5. He has not been writing.
6. She has not been writing.
7. It has not been writing.
8. They have not been writing.
9. John has not been writing.
10. Boy has not been writing.
11. She has not been writing.

Present Perfect Continuous Interrogative Sentences:

Formation:

Have or has "+" Subject "+" been "+" ing form of verb

1. Have I been writing?
2. Have we been writing?
3. Have you been writing? (Singular)
4. Have you been writing? (Plural)
5. Has he been writing?
6. Has she been writing?
7. has it been writing?
8. Have They been writing?
9. Has John been writing?
10. Has boy been writing?
11. Has she been writing?

Present Perfect Continuous Interrogative Negative Sentences:

Formation:

Have or has "+" Subject "+" not "+" been "+" ing form of verb

1. Have I not been writing?
2. Have we not been writing?
3. Have you not been writing? (Singular)
4. Have you not been writing? (Plural)
5. Has he not been writing?
6. Has she not been writing?
7. Has it not been writing?
8. Have they not been writing?
9. Has John not been writing?
10. Has boy not been writing?
11. Has she not been writing?