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