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