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