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