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The formation of the Present Perfect Continuous.

1. The Present Perfect Continuous is formed by means of the Present Perfect of the auxiliary verb to be and Participle I of the notional verb.

2.In the interrogative form the first auxiliary verb is placed before the subject.

In the negative form the negative particle not is placed after the first auxiliary verb.

3. The contracted affirmative forms are:

I’ve been working

He’s been working

You’ve been working

The contracted negative forms are:

I haven’t been working

He hasn’t been working

We haven’t been working

4. The negative-interrogative forms are:

{Has he not been working?

Hasn’t he been working?

{Have you not been working?

Haven’t you been working?

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