考研英语·每日核心词解析：undo，拒绝无效背诵，每天死磕一个高频词!从词根拆解到真题语境，一篇帮你彻底吃透它，建议先收藏再背诵!

高频考研英语单词：undo

单词：undo

音标：/ʌnˈduː/

释义：v.松开，解开

考频：★★★★

记法：

拆解为否定前缀un-(表反向、取消) + 基础词do(做) → 做出和“系紧、绑定”完全相反的动作 → 松开，解开；也可联想日常操作中“撤销操作”的逻辑，反向操作就能解开之前设置的内容，快速关联词义，同时也能顺带记住该词考研常考的引申义“抵消、撤销”。

派生词：

undid (动词过去式，松开，解开)

undone (动词过去分词/形容词，意为“解开的；未完成的；被毁掉的”)

undoes (动词第三人称单数形式，松开，解开)

undoing (名词，意为“解开；毁灭；失败的诱因”)

搭配：

undo the buttons 解开纽扣

undo the knot 解开绳结

undo the laces 解开鞋带

undo the damage 抵消造成的损害

undo a decision 撤销此前的决定

考研真题例句：

The newly elected president moved quickly to undo the environmental policies introduced by his predecessor.

新当选的总统迅速采取行动，废除前任出台的环境政策。

Once the harmful chemicals are released into the atmosphere, it is almost impossible to undo their effects completely.

一旦有害化学物质被排放到大气中，几乎不可能完全消除它们的影响。

It is not easy to undo the deep-rooted habits that you have formed over many years.

要改掉你多年来养成的根深蒂固的习惯并不容易。

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