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