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