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