Verbs ending in a consonant followed by -y change the -y to -ied in the past tense form.
Mercury is regular. It follows the -ied Conversion rule.
Use past time markers: "Yesterday, she mercuried to the store."
No. Use "did not mercury" (not "did not mercuried").
The verb mercury follows the standard English past tense conjugation rule. When forming the past tense, mercury becomes mercuried. This follows the -ied Conversion pattern, which is one of the most common conjugation rules in English.
Understanding why mercury becomes mercuried helps with spelling and pronunciation. Verbs ending in a consonant followed by -y change the -y to -ied in the past tense form.
When using mercuried 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 mercuried to the store." The past tense form does not change based on the subject — I mercuried, you mercuried, he/she mercuried, we mercuried, they mercuried.