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