Conjugation of verb "To do"
Present Simple Continuous
Present Perfect Continuous
Affirmative
He/She/It has been doing.
Negative
He/She/It has not been doing.
They have not been doing.
Interrogative
Has he/she/it been doing?
Affirmative
He/She/It had been doing.
Negative
He/She/It had not been doing.
Interrogative
Had he/she/it been doing?
Affirmative
He/She/It will have done.
Negative
He/She/It will not have done.
Interrogative
Will he/she/it have done?
Affirmative
He/She/It would have done.
Negative
He/She/It would not have done.
They would not have done.
Interrogative
Would he/she/it have done?