This verb follows the consonant-vowel-consonant (CVC) pattern. The final consonant is doubled before adding -ed to maintain the short vowel sound.
Datum is regular. It follows the Consonant Doubling rule.
Use past time markers: "Yesterday, she datummed to the store."
No. Use "did not datum" (not "did not datummed").
The verb datum follows the standard English past tense conjugation rule. When forming the past tense, datum becomes datummed. This follows the Consonant Doubling pattern, which is one of the most common conjugation rules in English.
Understanding why datum becomes datummed helps with spelling and pronunciation. This verb follows the consonant-vowel-consonant (CVC) pattern. The final consonant is doubled before adding -ed to maintain the short vowel sound.
When using datummed 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 datummed to the store." The past tense form does not change based on the subject — I datummed, you datummed, he/she datummed, we datummed, they datummed.