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