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