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