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