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