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