This verb follows the standard English past tense rule: simply add -ed to the base form.
Forewarn is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she forewarned to the store."
No. Use "did not forewarn" (not "did not forewarned").
The verb forewarn follows the standard English past tense conjugation rule. When forming the past tense, forewarn becomes forewarned. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why forewarn becomes forewarned helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using forewarned in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she forewarned to the store." The past tense form does not change based on the subject — I forewarned, you forewarned, he/she forewarned, we forewarned, they forewarned.