Conjugation of verb "To buy"
Present Simple Continuous
Present Perfect Continuous
Negative
He/She/It hasn't been buying.
They haven't been buying.
Interrogative
Has he/she/it been buying?
Negative
He/She/It hadn't been buying.
Interrogative
Had he/she/it been buying?
Affirmative
He/She/It'll have bought.
Negative
He/She/It won't have bought.
Interrogative
Will he/she/it have bought?
Negative
You wouldn't have bought.
He/She/It wouldn't have bought.
You wouldn't have bought.
They wouldn't have bought.
Interrogative
Would he/she/it have bought?