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Warn Verb Forms

Base form (v1)	Warn
Past form (v2)	Warned
Past Participle (v3) -ed form	Warned
Present Participle (v4) ‘ing’ form	Warning
Present simple (v5) s / es/ ies	Warns

Warn present tense

Simple present tense of warn
used for facts, generalizations, and truths that are not affected by the passage of time
Present continuous tense of warn
used to describe currently ongoing (usually temporary) actions
Present perfect tense of warn
used to describe events that began in the past and are expected to continue, or to emphasize the relevance of past events to the present moment
Present perfect continuous tense of warn
used to describe events that started in the past and continue into the present or were recently completed, emphasizing their relevance to the present moment

Warn past tense

Simple past tense of warn
used for events completed in the past
Past continuous tense of warn
used to describe ongoing past events, often in relation to the occurrence of another event
Past perfect tense of warn
used to describe events that happened prior to other events in the past
Past perfect continuous tense of warn
used to describe events that began, continued, and ended in the past, emphasizing their relevance to a past moment

Warn future tense

Simple future tense of warn
used for events to be completed in the future
Future continuous tense of warn
used to describe future events that are expected to continue over a period of time
Future perfect tense of warn
used to describe events that will be completed between now and a specific point in the future
Future perfect continuous tense of warn
used to describe events that will continue up until a point in the future, emphasizing their expected duration

Simple present tense of warn

Present continuous tense of warn

Present perfect tense of warn

Present perfect continuous tense of warn

Simple past tense of warn

Past continuous tense of warn

Past perfect tense of warn

Past perfect continuous tense of warn

Simple future tense of warn

Future continuous tense of warn

Future perfect tense of warn

Future perfect continuous tense of warn