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