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