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