Conjugation of verb "To swim"
Present Simple Continuous
Negative
He/She/It wasn't swiming.
Present Perfect Continuous
Affirmative
He/She/It's been swiming.
Negative
You haven't been swiming.
He/She/It hasn't been swiming.
You haven't been swiming.
They haven't been swiming.
Interrogative
Has he/she/it been swiming?
Affirmative
He/She/It'd been swiming.
Negative
He/She/It hadn't been swiming.
They hadn't been swiming.
Interrogative
Had he/she/it been swiming?
Negative
He/She/It won't have swum.
Interrogative
Will he/she/it have swum?
Negative
He/She/It wouldn't have swum.
Interrogative
Would he/she/it have swum?