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