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