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