unbend sth
及物用法，表示把弯曲的东西弄直或使松弛。
He unbent the wire to make it straight.
他把铁丝弄直了。
弄直；变直
放松；松弛；解开；松开；消除弯曲使变直。；使(负担)摆脱紧张或劳累；使暂时安闲；放松。；从桅杆或支索上解开帆。
To make or become straight.
消除弯曲使变直。
To remove a bend so as to make, or allow to become, straight.
使(负担)摆脱紧张或劳累；使暂时安闲；放松。
To release (a load) from a strain or from exertion; to set at ease for a time; to relax.
从桅杆或支索上解开帆。
To unfasten sails from the spars or stays to which are attached for use.
解开；松开。
To cast loose or untie
不再弯曲；变直。
To cease to be bent; to become straight.
在用力、注意、严厉等方面放松；松懈。
To relax in exertion, attention, severity, or the like
一般现在时
He unbends the wire easily.
他很容易地弄直电线。
一般过去时
She unbent the sail before the storm.
她在暴风雨前解开了帆索。
现在完成时
They have unbent the metal rod.
他们已经把金属杆弄直了。
不规则动词，过去式和过去分词为 unbent
He used a pair of pliers to unbend the thick wire.
他用一把钳子把那根粗电线弄直。
用法提示：此句中“unbend”为及物动词，意为“弄直”，后接宾语“the thick wire”。
Once the metal is heated, it unbends easily.
金属一旦受热，就很容易变直。
用法提示：此句中“unbends”是“unbend”的第三人称单数形式，用作不及物动词，表示“变直”。
She carefully unbent the paper clip and slid it into the tiny hole.
她小心地把回形针弄直，然后把它滑进小孔里。
用法提示：此句中“unbent”是“unbend”的过去式，作及物动词，表示“把…弄直”。
及物用法，表示把弯曲的东西弄直或使松弛。
He unbent the wire to make it straight.
他把铁丝弄直了。
不及物用法，指精神或身体从紧张状态松弛。
After the exam, she finally unbent from her tension.
考试后，她终于从紧张中放松下来。
航海术语，意为解开帆索。
The sailor unbent the sail from the spar.
水手把帆从桅杆上解下来。
grammar · medium
易错句子He unbended the wire.
正确表达He unbent the wire.
动词 "unbend" 的过去式是 "unbent"，不是规则变化 "unbended"。中文学习者常误用规则变化形式，应使用不规则形式 "unbent"。
grammar · medium
易错句子She unbent herself from the rope.
正确表达She unbent the rope.
"unbend" 作 "解开" 解时是及物动词，直接接宾语，不需反身代词。"unbent herself" 表达冗余且不自然，应去掉 "herself"。
unbend 是动词‘放松、伸直’，而 unbending 是形容词‘坚硬、不屈的’
unbend 意为‘伸直、放松’，bend 则是其反义词‘弯曲’
unbend 特指‘伸直或解开’，而 relax 泛指‘放松’（不强调物理伸直）
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