This verb follows the standard English past tense rule: simply add -ed to the base form.
Malfunction is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she malfunctioned to the store."
No. Use "did not malfunction" (not "did not malfunctioned").
The verb malfunction follows the standard English past tense conjugation rule. When forming the past tense, malfunction becomes malfunctioned. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why malfunction becomes malfunctioned helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using malfunctioned 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 malfunctioned to the store." The past tense form does not change based on the subject — I malfunctioned, you malfunctioned, he/she malfunctioned, we malfunctioned, they malfunctioned.