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
How about some more beef?
再来一些牛肉好吗？
No, more, about 130 years ago. Most of the slave owners were rich farmers who lived in the south. They wanted to keep their slaves.
不，还要早，大约130年前。大多数奴隶主都是住在南方的富有的农场主。他们想保留自己的奴隶。
Perhaps in those days I was. Pierre and I did have a very good time at the ball. But that was the last moment of happiness in our lives. That night everything changed.
那时候，我也许是个漂亮姑娘。我和比尔在舞会上的确玩得很痛快。不过，那是我们一生中最后的幸福时刻。那天晚上一切都变了。