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