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Conjugation model: to know

[o, a] > e

Rule [o, a] > e

The base vowel becomes e in the past, with an -n participle (know → knew → known).

← All conjugation models

to

know

Indicative

Present

Affirmative
  1. Iknow
  2. youknow
  3. he, she, itknows
  4. weknow
  5. youknow
  6. theyknow
Negative
  1. Ido not know
  2. youdo not know
  3. he, she, itdoes not know
  4. wedo not know
  5. youdo not know
  6. theydo not know
Interrogative
  1. DoI know?
  2. Doyou know?
  3. Doeshe, she, it know?
  4. Dowe know?
  5. Doyou know?
  6. Dothey know?
Passive
  1. Iam known
  2. youare known
  3. he, she, itis known
  4. weare known
  5. youare known
  6. theyare known

Simple past

Affirmative
  1. Iknew
  2. youknew
  3. he, she, itknew
  4. weknew
  5. youknew
  6. theyknew
Negative
  1. Idid not know
  2. youdid not know
  3. he, she, itdid not know
  4. wedid not know
  5. youdid not know
  6. theydid not know
Interrogative
  1. DidI know?
  2. Didyou know?
  3. Didhe, she, it know?
  4. Didwe know?
  5. Didyou know?
  6. Didthey know?
Passive
  1. Iwas known
  2. youwere known
  3. he, she, itwas known
  4. wewere known
  5. youwere known
  6. theywere known

Future

Affirmative
  1. Iwill know
  2. youwill know
  3. he, she, itwill know
  4. wewill know
  5. youwill know
  6. theywill know
Negative
  1. Iwill not know
  2. youwill not know
  3. he, she, itwill not know
  4. wewill not know
  5. youwill not know
  6. theywill not know
Interrogative
  1. WillI know?
  2. Willyou know?
  3. Willhe, she, it know?
  4. Willwe know?
  5. Willyou know?
  6. Willthey know?
Passive
  1. Iwill be known
  2. youwill be known
  3. he, she, itwill be known
  4. wewill be known
  5. youwill be known
  6. theywill be known

Present perfect

Affirmative
  1. Ihave known
  2. youhave known
  3. he, she, ithas known
  4. wehave known
  5. youhave known
  6. theyhave known
Negative
  1. Ihave not known
  2. youhave not known
  3. he, she, ithas not known
  4. wehave not known
  5. youhave not known
  6. theyhave not known
Interrogative
  1. HaveI known?
  2. Haveyou known?
  3. Hashe, she, it known?
  4. Havewe known?
  5. Haveyou known?
  6. Havethey known?
Passive
  1. Ihave been known
  2. youhave been known
  3. he, she, ithas been known
  4. wehave been known
  5. youhave been known
  6. theyhave been known

Past perfect

Affirmative
  1. Ihad known
  2. youhad known
  3. he, she, ithad known
  4. wehad known
  5. youhad known
  6. theyhad known
Negative
  1. Ihad not known
  2. youhad not known
  3. he, she, ithad not known
  4. wehad not known
  5. youhad not known
  6. theyhad not known
Interrogative
  1. HadI known?
  2. Hadyou known?
  3. Hadhe, she, it known?
  4. Hadwe known?
  5. Hadyou known?
  6. Hadthey known?
Passive
  1. Ihad been known
  2. youhad been known
  3. he, she, ithad been known
  4. wehad been known
  5. youhad been known
  6. theyhad been known

Future perfect

Affirmative
  1. Iwill have known
  2. youwill have known
  3. he, she, itwill have known
  4. wewill have known
  5. youwill have known
  6. theywill have known
Negative
  1. Iwill not have known
  2. youwill not have known
  3. he, she, itwill not have known
  4. wewill not have known
  5. youwill not have known
  6. theywill not have known
Interrogative
  1. WillI have known?
  2. Willyou have known?
  3. Willhe, she, it have known?
  4. Willwe have known?
  5. Willyou have known?
  6. Willthey have known?
Passive
  1. Iwill have been known
  2. youwill have been known
  3. he, she, itwill have been known
  4. wewill have been known
  5. youwill have been known
  6. theywill have been known

Present continuous

Affirmative
  1. Iam knowing
  2. youare knowing
  3. he, she, itis knowing
  4. weare knowing
  5. youare knowing
  6. theyare knowing
Negative
  1. Iam not knowing
  2. youare not knowing
  3. he, she, itis not knowing
  4. weare not knowing
  5. youare not knowing
  6. theyare not knowing
Interrogative
  1. AmI knowing?
  2. Areyou knowing?
  3. Ishe, she, it knowing?
  4. Arewe knowing?
  5. Areyou knowing?
  6. Arethey knowing?

Past continuous

Affirmative
  1. Iwas knowing
  2. youwere knowing
  3. he, she, itwas knowing
  4. wewere knowing
  5. youwere knowing
  6. theywere knowing
Negative
  1. Iwas not knowing
  2. youwere not knowing
  3. he, she, itwas not knowing
  4. wewere not knowing
  5. youwere not knowing
  6. theywere not knowing
Interrogative
  1. WasI knowing?
  2. Wereyou knowing?
  3. Washe, she, it knowing?
  4. Werewe knowing?
  5. Wereyou knowing?
  6. Werethey knowing?

Future continuous

Affirmative
  1. Iwill be knowing
  2. youwill be knowing
  3. he, she, itwill be knowing
  4. wewill be knowing
  5. youwill be knowing
  6. theywill be knowing
Negative
  1. Iwill not be knowing
  2. youwill not be knowing
  3. he, she, itwill not be knowing
  4. wewill not be knowing
  5. youwill not be knowing
  6. theywill not be knowing
Interrogative
  1. WillI be knowing?
  2. Willyou be knowing?
  3. Willhe, she, it be knowing?
  4. Willwe be knowing?
  5. Willyou be knowing?
  6. Willthey be knowing?

Future perfect continuous

Affirmative
  1. Iwill have been knowing
  2. youwill have been knowing
  3. he, she, itwill have been knowing
  4. wewill have been knowing
  5. youwill have been knowing
  6. theywill have been knowing
Negative
  1. Iwill not have been knowing
  2. youwill not have been knowing
  3. he, she, itwill not have been knowing
  4. wewill not have been knowing
  5. youwill not have been knowing
  6. theywill not have been knowing
Interrogative
  1. WillI have been knowing?
  2. Willyou have been knowing?
  3. Willhe, she, it have been knowing?
  4. Willwe have been knowing?
  5. Willyou have been knowing?
  6. Willthey have been knowing?

Present perfect continuous

Affirmative
  1. Ihave been knowing
  2. youhave been knowing
  3. he, she, ithas been knowing
  4. wehave been knowing
  5. youhave been knowing
  6. theyhave been knowing
Negative
  1. Ihave not been knowing
  2. youhave not been knowing
  3. he, she, ithas not been knowing
  4. wehave not been knowing
  5. youhave not been knowing
  6. theyhave not been knowing
Interrogative
  1. HaveI been knowing?
  2. Haveyou been knowing?
  3. Hashe, she, it been knowing?
  4. Havewe been knowing?
  5. Haveyou been knowing?
  6. Havethey been knowing?

Past perfect continuous

Affirmative
  1. Ihad been knowing
  2. youhad been knowing
  3. he, she, ithad been knowing
  4. wehad been knowing
  5. youhad been knowing
  6. theyhad been knowing
Negative
  1. Ihad not been knowing
  2. youhad not been knowing
  3. he, she, ithad not been knowing
  4. wehad not been knowing
  5. youhad not been knowing
  6. theyhad not been knowing
Interrogative
  1. HadI been knowing?
  2. Hadyou been knowing?
  3. Hadhe, she, it been knowing?
  4. Hadwe been knowing?
  5. Hadyou been knowing?
  6. Hadthey been knowing?

Present emphatic

Affirmative
  1. Ido know
  2. youdo know
  3. he, she, itdoes know
  4. wedo know
  5. youdo know
  6. theydo know

Past emphatic

Affirmative
  1. Idid know
  2. youdid know
  3. he, she, itdid know
  4. wedid know
  5. youdid know
  6. theydid know

Conditional

Present

Affirmative
  1. Iwould know
  2. youwould know
  3. he, she, itwould know
  4. wewould know
  5. youwould know
  6. theywould know
Negative
  1. Iwould not know
  2. youwould not know
  3. he, she, itwould not know
  4. wewould not know
  5. youwould not know
  6. theywould not know
Interrogative
  1. WouldI know?
  2. Wouldyou know?
  3. Wouldhe, she, it know?
  4. Wouldwe know?
  5. Wouldyou know?
  6. Wouldthey know?
Passive
  1. Iwould be known
  2. youwould be known
  3. he, she, itwould be known
  4. wewould be known
  5. youwould be known
  6. theywould be known

Perfect

Affirmative
  1. Iwould have known
  2. youwould have known
  3. he, she, itwould have known
  4. wewould have known
  5. youwould have known
  6. theywould have known
Negative
  1. Iwould not have known
  2. youwould not have known
  3. he, she, itwould not have known
  4. wewould not have known
  5. youwould not have known
  6. theywould not have known
Interrogative
  1. WouldI have known?
  2. Wouldyou have known?
  3. Wouldhe, she, it have known?
  4. Wouldwe have known?
  5. Wouldyou have known?
  6. Wouldthey have known?
Passive
  1. Iwould have been known
  2. youwould have been known
  3. he, she, itwould have been known
  4. wewould have been known
  5. youwould have been known
  6. theywould have been known

Present continuous

Affirmative
  1. Iwould be knowing
  2. youwould be knowing
  3. he, she, itwould be knowing
  4. wewould be knowing
  5. youwould be knowing
  6. theywould be knowing

Perfect continuous

Affirmative
  1. Iwould have been knowing
  2. youwould have been knowing
  3. he, she, itwould have been knowing
  4. wewould have been knowing
  5. youwould have been knowing
  6. theywould have been knowing

Imperative

Present

Affirmative
  1. I—
  2. youknow!
  3. he, she, it—
  4. welet's know!
  5. youknow!
  6. they—
Negative
  1. I—
  2. youdon't know!
  3. he, she, it—
  4. welet's not know!
  5. youdon't know!
  6. they—

Subjunctive

Present

Affirmative
  1. Iknow
  2. youknow
  3. he, she, itknow
  4. weknow
  5. youknow
  6. theyknow

Past

Affirmative
  1. Iknew
  2. youknew
  3. he, she, itknew
  4. weknew
  5. youknew
  6. theyknew

Past perfect

Affirmative
  1. Ihad known
  2. youhad known
  3. he, she, ithad known
  4. wehad known
  5. youhad known
  6. theyhad known

Future

Affirmative
  1. Ishould know
  2. youshould know
  3. he, she, itshould know
  4. weshould know
  5. youshould know
  6. theyshould know

Infinitive

Present

Affirmative
  1. (to) know

Perfect

Affirmative
  1. (to) have known

Participle

Present

Affirmative
  1. knowing

Past

Affirmative
  1. known