Conjugation and declension of "quack" in English
Conjugation of the verb quack[kwæk],
regular 
Indicative
Present Indefinite
Present Continuous
Present Perfect
Present Perfect Continuous
Past Indefinite
Past Continuous
Past Perfect
Past Perfect Continuous
Future Indefinite
Future Continuous
Future Perfect
Future Perfect Continuous
Indicative
Present Indefinite
I don't quackyou don't quack
he/she/it doesn't quack
we don't quack
you don't quack
they don't quack
Present Continuous
I am not quackingyou aren't quacking
he/she/it isn't quacking
we aren't quacking
you aren't quacking
they aren't quacking
Present Perfect
I haven't quackedyou haven't quacked
he/she/it hasn't quacked
we haven't quacked
you haven't quacked
they haven't quacked
Present Perfect Continuous
I haven't been quackingyou haven't been quacking
he/she/it hasn't been quacking
we haven't been quacking
you haven't been quacking
they haven't been quacking
Past Indefinite
I didn't quackyou didn't quack
he/she/it didn't quack
we didn't quack
you didn't quack
they didn't quack
Past Continuous
I wasn't quackingyou weren't quacking
he/she/it wasn't quacking
we weren't quacking
you weren't quacking
they weren't quacking
Past Perfect
I hadn't quackedyou hadn't quacked
he/she/it hadn't quacked
we hadn't quacked
you hadn't quacked
they hadn't quacked
Past Perfect Continuous
I hadn't been quackingyou hadn't been quacking
he/she/it hadn't been quacking
we hadn't been quacking
you hadn't been quacking
they hadn't been quacking
Future Indefinite
I shan't / won't quackyou won't quack
he/she/it won't quack
we shan't / won't quack
you won't quack
they won't quack
Future Continuous
I shan't / won't be quackingyou won't be quacking
he/she/it won't be quacking
we shan't / won't be quacking
you won't be quacking
they won't be quacking
Future Perfect
I shan't / won't have quackedyou won't have quacked
he/she/it won't have quacked
we shan't / won't have quacked
you won't have quacked
they won't have quacked
Future Perfect Continuous
I shan't / won't have been quackingyou won't have been quacking
he/she/it won't have been quacking
we shan't / won't have been quacking
you won't have been quacking
they won't have been quacking
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't quackyou wouldn't quack
he/she/it wouldn't quack
we wouldn't quack
you wouldn't quack
they wouldn't quack
Conditional Present Continuous
I wouldn't be quackingyou wouldn't be quacking
he/she/it wouldn't be quacking
we wouldn't be quacking
you wouldn't be quacking
they wouldn't be quacking
Conditional Perfect
I wouldn't have quackedyou wouldn't have quacked
he/she/it wouldn't have quacked
we wouldn't have quacked
you wouldn't have quacked
they wouldn't have quacked
Conditional Perfect Continuous
I wouldn't have been quackingyou wouldn't have been quacking
he/she/it wouldn't have been quacking
we wouldn't have been quacking
you wouldn't have been quacking
they wouldn't have been quacking
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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