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