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