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