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