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