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