Conjugation and declension of "sum" in English
Conjugation of the verb sum[sʌm],
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 sumyou don't sum
he/she/it doesn't sum
we don't sum
you don't sum
they don't sum
Present Continuous
I am not summingyou aren't summing
he/she/it isn't summing
we aren't summing
you aren't summing
they aren't summing
Present Perfect
I haven't summedyou haven't summed
he/she/it hasn't summed
we haven't summed
you haven't summed
they haven't summed
Present Perfect Continuous
I haven't been summingyou haven't been summing
he/she/it hasn't been summing
we haven't been summing
you haven't been summing
they haven't been summing
Past Indefinite
I didn't sumyou didn't sum
he/she/it didn't sum
we didn't sum
you didn't sum
they didn't sum
Past Continuous
I wasn't summingyou weren't summing
he/she/it wasn't summing
we weren't summing
you weren't summing
they weren't summing
Past Perfect
I hadn't summedyou hadn't summed
he/she/it hadn't summed
we hadn't summed
you hadn't summed
they hadn't summed
Past Perfect Continuous
I hadn't been summingyou hadn't been summing
he/she/it hadn't been summing
we hadn't been summing
you hadn't been summing
they hadn't been summing
Future Indefinite
I shan't / won't sumyou won't sum
he/she/it won't sum
we shan't / won't sum
you won't sum
they won't sum
Future Continuous
I shan't / won't be summingyou won't be summing
he/she/it won't be summing
we shan't / won't be summing
you won't be summing
they won't be summing
Future Perfect
I shan't / won't have summedyou won't have summed
he/she/it won't have summed
we shan't / won't have summed
you won't have summed
they won't have summed
Future Perfect Continuous
I shan't / won't have been summingyou won't have been summing
he/she/it won't have been summing
we shan't / won't have been summing
you won't have been summing
they won't have been summing
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't sumyou wouldn't sum
he/she/it wouldn't sum
we wouldn't sum
you wouldn't sum
they wouldn't sum
Conditional Present Continuous
I wouldn't be summingyou wouldn't be summing
he/she/it wouldn't be summing
we wouldn't be summing
you wouldn't be summing
they wouldn't be summing
Conditional Perfect
I wouldn't have summedyou wouldn't have summed
he/she/it wouldn't have summed
we wouldn't have summed
you wouldn't have summed
they wouldn't have summed
Conditional Perfect Continuous
I wouldn't have been summingyou wouldn't have been summing
he/she/it wouldn't have been summing
we wouldn't have been summing
you wouldn't have been summing
they wouldn't have been summing
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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