Conjugation and declension of "collapse" in English
Conjugation of the verb collapse[kəˈlæps],
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 collapseyou don't collapse
he/she/it doesn't collapse
we don't collapse
you don't collapse
they don't collapse
Present Continuous
I am not collapsingyou aren't collapsing
he/she/it isn't collapsing
we aren't collapsing
you aren't collapsing
they aren't collapsing
Present Perfect
I haven't collapsedyou haven't collapsed
he/she/it hasn't collapsed
we haven't collapsed
you haven't collapsed
they haven't collapsed
Present Perfect Continuous
I haven't been collapsingyou haven't been collapsing
he/she/it hasn't been collapsing
we haven't been collapsing
you haven't been collapsing
they haven't been collapsing
Past Indefinite
I didn't collapseyou didn't collapse
he/she/it didn't collapse
we didn't collapse
you didn't collapse
they didn't collapse
Past Continuous
I wasn't collapsingyou weren't collapsing
he/she/it wasn't collapsing
we weren't collapsing
you weren't collapsing
they weren't collapsing
Past Perfect
I hadn't collapsedyou hadn't collapsed
he/she/it hadn't collapsed
we hadn't collapsed
you hadn't collapsed
they hadn't collapsed
Past Perfect Continuous
I hadn't been collapsingyou hadn't been collapsing
he/she/it hadn't been collapsing
we hadn't been collapsing
you hadn't been collapsing
they hadn't been collapsing
Future Indefinite
I shan't / won't collapseyou won't collapse
he/she/it won't collapse
we shan't / won't collapse
you won't collapse
they won't collapse
Future Continuous
I shan't / won't be collapsingyou won't be collapsing
he/she/it won't be collapsing
we shan't / won't be collapsing
you won't be collapsing
they won't be collapsing
Future Perfect
I shan't / won't have collapsedyou won't have collapsed
he/she/it won't have collapsed
we shan't / won't have collapsed
you won't have collapsed
they won't have collapsed
Future Perfect Continuous
I shan't / won't have been collapsingyou won't have been collapsing
he/she/it won't have been collapsing
we shan't / won't have been collapsing
you won't have been collapsing
they won't have been collapsing
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't collapseyou wouldn't collapse
he/she/it wouldn't collapse
we wouldn't collapse
you wouldn't collapse
they wouldn't collapse
Conditional Present Continuous
I wouldn't be collapsingyou wouldn't be collapsing
he/she/it wouldn't be collapsing
we wouldn't be collapsing
you wouldn't be collapsing
they wouldn't be collapsing
Conditional Perfect
I wouldn't have collapsedyou wouldn't have collapsed
he/she/it wouldn't have collapsed
we wouldn't have collapsed
you wouldn't have collapsed
they wouldn't have collapsed
Conditional Perfect Continuous
I wouldn't have been collapsingyou wouldn't have been collapsing
he/she/it wouldn't have been collapsing
we wouldn't have been collapsing
you wouldn't have been collapsing
they wouldn't have been collapsing
Participles
Present
Past
Infinitives
Infinitives
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Conjugation of English verbs
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