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