Undo
[ ʌn'du ]
第3级
其它 Other
vt. 松开，解开;取消，废除;毁灭;扰乱;
vi. 撤销;
💡 词根助记
un除去，解开+do做→取消，解开
📝 例句
What's done cannot be undone.
覆水难收。
There was bandages to do, sir, and bandages undo.
要扎绷带，先生，还要解绷带。
Ah, don't let us undo what you've done.
啊，不要让我们改变你们已经决定了的事。
It is better for the doer to undo what he has done.
解铃还需系铃人。
He has undone the good work of his predecessor.
他已毁了他前任取得的良好成就。
🌱 联想助记
【记】※ un-前缀“不、相反”,do-做、干:不做原来定好的事情→取消
※ un-前缀“不、相反”,do-做、干:你如果不干坏事,我就解开你身上的绳子
✅ 同义词
🔴 反义词
📖 牛津释义
undo
v
(pt undid , pp undone ) [Tn]
1 untie or unfasten (knots, buttons, etc); open (a parcel, an envelope, etc) 解开, 松开（结、 钮扣等）; 打开, 拆开（包裹、 信封等）
My zip has come undone. 我的拉锁开了.
I can't undo my shoelaces. 我解不开鞋带.
undo (ie unravel) some knitting 拆开编结物. Cf 参看 do up (do2), do sth up.
2 destroy the effect of (sth); cancel 使（某事物）无效;取消; 废除
He undid most of the good work of his predecessor. 他把前任的大部分业绩毁掉了.
What is done cannot be undone. 已做的事是既成事实.
🎯 考研助记
我不(un)干(do)， 松开我
🔁 扩展释义
*[,ʌn'du:]vt. 解开, 取消, 破坏, 毁灭, 扰乱vi. 松开【计】 撤消
📖 同为「CET-4」词汇
查看全部CET-4词汇 ›🗣️ 情景例句
Hello.
你好。
Four hundred! That's a lot of money. But, just this once. After all, this ball is very important.
400法郎！这倒是很大一笔钱。不过，就只这么一次。要知道，这次舞会很重要啊。
What time?
什么时间？