Regular past verbs: report what happened and what is ready
先写下记得的内容，再查看解释。不要填写个人信息。
查看解释
A regular verb adds -ed to make both its past simple and its past participle. Use the past simple for a finished time (I packed it yesterday) and have or has plus the participle for a result now (I have packed it). After did or didn't, use the base form.
I packed the box yesterday, and I've packed the plates too.