Future Perfect Continous Tense

A verb which shows that some action will be done in future continually and will come to an end either in future is called Future Perfect Continuous Tense.

Formation:

Subject "+" shall have been or will have been"+" ing form of verb..

I "+" shall have been"+" writing.

We "+" shall have been"+" writing.

He "+" shall have been"+" writing.

Conjugation:
1. I shall have been writing.

2. We shall have been writing

3. You will have been writing. (Singular)

4. You will have been writing. (Plural)

5. He will have been writing.

6. She will have been writing.

7. It will have been writing.

8. They will have been writing.

9. John will have beeen writing.

10. Boy will have been writing.

11. She will have been writing.

Future Perfect Continuous Negative Sentences:

Formation:

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

1. I shall not have been writing.

2. We shall not have been writing

3. You will not have been writing. (Singular)

4. You will not have been writing. (Plural)

5. He will not have been writing.

6. She will not have been writing.

7. It will not have been writing.

8. They will not have been writing.

9. John will not have been writing.

10. Boy will not have been writing.

11. She will not have been writing.

Future Perfect Continuous Interrogative Sentences:

Formation:

Shall or will "+" Subject "+" have been "+" ing form of verb

1. Shall I have been writing?

2. Shall we have been writing?

3. Will you have been writing? (Singular)

4. Will you have been writing? (Plural)

5. Will he have been writing?

6. Will she have been writing?

7. Will it have been writing?

8. Will they have been writing?

9. Will John have been writing?

10. Will boy have been writing?

11. Will she have been writing?

Future Perfect Continuous Interrogative Negative Sentences:

Formation:

Shall or will "+" Subject "+" not "+" have been "+" ing form of verb

1. Shall I not have been writing?

2. Shall we not have been writing?

3. Will you not have been writing? (Singular)

4. Will you not have been writing? (Plural)

5. Will he not have been writing?

6. Will she not have been writing?

7. Will it not have been writing?

8. Will they not have been writing?

9. Will John not have been writing?

10. Will boy not have been writing?

11. Will she not have been writing?