(Процесс, который занял определенный интервал времени и идет в данный момент; интервал времени обязательно указывается)

Have been + глагол (смысловой) + ing

Present

Past

Future

Утвердительная форма

I

You

We

They

have been asking, writing for 2 hours.

I

You

he (she, it)

We

They

had been asking, writing for 2 hours before the professor came.

I

We

shall have been asking, writing for 2 hours when you come.

He She

It

has been asking, writing for 2 hours.

You

He she

It

They

will have been asking, writing.

Time indicators:

for (в течение, в продолжение), since (с).

Перевод: настоящим, прошедшим или будущим временем несовершенного вида.

Вопросительная

Форма

Have

I

you

we

they

been asking, writing?

Had

I

you

he

she

it

we

they

been asking, writing?

Shall

I

we

have been asking, writing?

Yes, I have.

Yes, I shall.

Has

he

she

it

been asking, writing?

Will

you

he she

it

they

have been asking, writing?

Yes, she has.

Yes, he had.

Yes, she will.

Отрицательная форма

I

You

We

They

Have not (haven’t) been asking, writing?

I

you

he

she

it

we

they

Had not (hadn’t) been asking, writing?

I

We

shall not (shan’t) have been asking, writing.

He

She

It

Has not (hasn’t) been asking, writing?

You

He (she, it)

They

will not (won’t) have been asking, writing.

1. Energy demand grows more slowly than expected in the past decade.

2. Experiments led to new theories.

3. Lasers will be unlikely used in our everyday life soon.

4. The engineer has already been designing the device for three months.

5. The newest electronic-memory systems have been made possible by modern semiconductor technology.

6. The scientists will have done the research by the end of the year.

7. They had done part of the research by the end of 2011.

8. The scientist was doing the research when the American delegation came.

9. The scientists had been doing the research for 2 months when the American delegation came.

10. The scientists will be still doing the research when the French delegation comes next month.

11. The scientists will have been doing the research for 3 months when the French delegation comes next month.

1. Future Perfect Continuous.

2. Simple Past.

3. Present Perfect.

4. Present Continuous.

5. Future Perfect.

6. Simple Future.

7. Simple Present.

8. Past Continuous.

9. Future Continuous.

10. Present Perfect Continuous.

11. Past Perfect.

12. Past Perfect Continuous.