be balding
进行时最常用，强调正在脱发的过程，而不是已经彻底秃顶。
He is balding at the crown.
他头顶正在变秃。
变秃；头部脱发
balds — third person singular of bald
使变秃
To become bald; to lose the hair on one's head.
变秃
To become bald.
变秃；头部脱发
grow bald; lose hair on one's head
使变秃
To make bald.
一般现在时
My grandfather balds at an early age.
我祖父年纪轻轻就秃顶了。
一般过去时
He balded completely within a few years.
几年之内他就完全秃顶了。
现在完成时
She has balded since she began the medication.
自开始服药以来，她的头发就掉光了。
规则动词：过去式和过去分词均为 balded。
My uncle started to bald in his late twenties, though his father kept a full head of hair.
我叔叔二十多岁时开始变秃，尽管他父亲一直头发浓密。
用法提示：此处 bald 作不及物动词，接在 started to 后，表示“开始变秃”。
AI contextual example
If a man balds early, he may feel self-conscious about his appearance.
如果一个男人过早变秃，他可能会对自己的外表感到不自在。
用法提示：balds 是 bald 的第三人称单数形式，作谓语，表示“变秃”。
AI contextual example
By the time he was fifty, he had completely balded on top.
到他五十岁时，他的头顶已经完全秃了。
用法提示：balded 是 bald 的过去分词，与 had 构成过去完成时，表示“已经完全变秃”。
AI contextual example
进行时最常用，强调正在脱发的过程，而不是已经彻底秃顶。
He is balding at the crown.
他头顶正在变秃。
不及物用法，主语多为人或其头部；一般时不如进行时常见。
Many men bald in their forties.
许多男性在四十多岁时变秃。
及物用法，表示使某人变秃，使用频率较低。
The treatment balded him within a few months.
这种治疗让他在几个月内变秃了。
grammar · medium
易错句子He started to bold in his forties.
正确表达He started to bald in his forties.
bold 意为“大胆的”，作动词时是“把文字加粗”，都不能表示“变秃”；表示逐渐秃发的过程要用 bald。两词拼写只差一个字母，容易混淆。
grammar · medium
易错句子My father is balded now.
正确表达My father is balding now.
表示“正在逐渐变秃”要用现在分词 balding 构成进行时；balded 是过去式和过去分词，不能放在 is 后面表示正在发生的变化。
grammar · medium
易错句子He bald before he was thirty.
正确表达He balded before he was thirty.
英语中表示过去发生的事必须用动词过去式；中文没有时态标记，学习者常漏掉 -ed。bald 的过去式是 balded。
开始脱发
He started balding in his early thirties.
他三十出头就开始脱发了。
头顶变秃
My uncle has balded on top but still has hair at the sides.
我叔叔头顶秃了，但两侧还有头发。
两鬓变秃
He began to bald at the temples.
他开始两鬓脱发。
过早秃顶
Many men bald prematurely because of their genes.
许多男性因为基因而过早秃顶。
随年龄增长而秃顶
Most men bald with age.
大多数男性随着年龄增长而秃顶。
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