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