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