Not "I didn't went." — say "I didn't go.". 过去的意思已经在 didn't 里了，所以动词还原成原形：go，不是 went。
试一试: She ___ to work yesterday. (didn't go / didn't went / didn't goed) 答案: didn't go — didn't 后面动词还原成原形：didn't go. "went" 和 "goed" 都是想再表示一次过去，但 didn't 已经做到了。
Did + 动词原形（提问）
要问过去的事，把 Did 放在句子最前面，再用动词原形。道理一样：Did 已经带着过去的意思，所以动词保持原形。
She worked here. → Did she work here?
You went out. → Did you go out?
They saw you. → Did they see you?
Not "Did you went out?" — say "Did you go out?". Did 已经表示过去了，所以动词还原成原形：go，不是 went。
试一试: Mei went to the party. 问 Mei 是否去了聚会。 答案: Did Mei go to the party? — 先说 Did，再说主语，最后是动词原形：Did Mei go to the party? "went" 不要放进去。Did 已经带着过去的意思，所以动词还原成 go。
试一试: Lars saw the email. 问 Lars 是否看了那封邮件。 答案: Did Lars see the email? — 先是 Did，再是 Lars，最后是动词原形：Did Lars see the email? "saw" 不要放进去。过去的意思已经在 Did 里了，所以动词是 see。
简短回答：Yes, I did
回答 Did 提出的问题，单独用 did 就行，不用主要动词：Yes, I did. / No, I didn't.
Did you go? → Yes, I did.
Did she call? → No, she didn't.
Did they win? → Yes, they did.
Not "Did you go? → Yes, I went." — say "Did you go? → Yes, I did.". 回答时用问题里的那个词（did），不是主要动词。
试一试: Did Mei enjoy the trip? → Yes, she ___. (did / does / enjoyed) 答案: did — 问题里用了 Did（过去式），回答也要对应：Yes, she did（不是 "does"，也不是主要动词）。
试一试: ___ you like the film? (Did / Do / Was) 答案: Did — 问过去的事，要以 Did 开头。"Do" 问的是现在的事；"Was" 后面要接描述的词，不是像 "like" 这样的动作词。
试一试: Remember where the past lives. He didn't ___ me. (see / saw / seen) 答案: see — 过去的意思在 didn't 里，所以动词还原成原形：didn't see.（Did 或 didn't 后面，永远用动词原形。）