Conjugation of verb "To buy"
Present Simple Continuous
Negative
He/She/It was not buying.
Negative
He/She/It has not bought.
Present Perfect Continuous
Affirmative
He/She/It has been buying.
Negative
You have not been buying.
He/She/It has not been buying.
You have not been buying.
They have not been buying.
Interrogative
Has he/she/it been buying?
Negative
He/She/It had not bought.
Affirmative
He/She/It had been buying.
Negative
He/She/It had not been buying.
They had not been buying.
Interrogative
Had he/she/it been buying?
Affirmative
He/She/It will have bought.
Negative
You will not have bought.
He/She/It will not have bought.
You will not have bought.
They will not have bought.
Interrogative
Will he/she/it have bought?
Affirmative
He/She/It would have bought.
Negative
You would not have bought.
We would not have bought.
He/She/It would not have bought.
You would not have bought.
They would not have bought.
Interrogative
Would he/she/it have bought?