Present Perfect Continuous
Affirmative : S + have/has + been + Ving
e.g. : I have been living in this city for many yea 323b11d rs.
Interrogative : Have/has + S + been + Ving
e.g. : How long have you been waiting for him ?
Negative : S + have/has + not + been + Ving
e.g. : I haven’t been solving problems this morning .
It is used to express :
Continuous = action in progress
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