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