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