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