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