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