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