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