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