This verb follows the standard English past tense rule: simply add -ed to the base form.
Curtain is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she curtained to the store."
No. Use "did not curtain" (not "did not curtained").
The verb curtain follows the standard English past tense conjugation rule. When forming the past tense, curtain becomes curtained. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why curtain becomes curtained helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using curtained 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 curtained to the store." The past tense form does not change based on the subject — I curtained, you curtained, he/she curtained, we curtained, they curtained.