Present Perfect Continuous # Grammar For IELTS

The present perfect continuous is used in the following cases –

To express an action that began at some time in the past and still continues.

EXAMPLE-

1. We have been walking since morning.
2. They have been building the house for several months.
3. They have been studying since 7:00 am.

This form of tense if often used to describe a statement that has already completed. In this case, the emphasis is laid on the continuity of activity as an explanation of something.

EXAMPLE-

1. Why have you become so thin? I have been in bed for few months.

In present perfect continuous tense, for and since are often used. But there is a difference between the two.
For is used to indicate a period of time, since indicates a point of time.

For example-

1. She has been reading this book since last January.
2. The boys have been playing for 6 hours.
3. She has been sitting here since yesterday.

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