核心词议：
adj. 不会的；不能的
unable 基本解释
adj. 不能的，不会的；无能力的，不熟练的；不能胜任的；〈罕，诗〉弱，无力的
速记方法
速记技巧 联想记忆法 un做前缀表否定，able能，能够=不能够，不能的
知识扩展
词组短语 unable to establish 不能成立
unable to afford 付不起的
unable to decide 无法决定的
中文词源
unable 不能够的
un-, 不，非，able, 能够的。
中文词源： unable 不能够的 un-, 不，非，able, 能够的。 unable
精选例句
1、 According to the card, if you are unable to go, you can contact Alice's mother.
根据卡片，如果你不能去，你可以联系爱丽丝的母亲。[机器自动翻译，如有错误，感谢纠错]
2、 Anxious all the time, I was unable to keep focused for more than an hour at a time.
我一直很焦虑，每次都不能集中精力超过一个小时。[机器自动翻译，如有错误，感谢纠错]
1、 One widely accepted psychological definition of boredom is“the distasteful experience of wanting, but being unable, to engage in satisfying activity.
一个被广泛接受的心理学对无聊的定义是“想要却无法从事令人满意的活动的令人厌恶的经历”。
1、 Piaget not only believed that children were “egocentric” in the sense that they were unable to differentiate between their own viewpoint and that of others; he was also convinced that their thinking was characterized by systematic errors and confusions.
皮亚杰不仅认为儿童是“自我中心的”，即他们无法区分自己的观点和他人的观点;他还确信，他们的思想具有系统性错误和混乱的特点。
1、 Unable to tell whether someone really objects to behavioural ads or whether they are sticking with Microsoft’s default, some may ignore a DNT signal and press on anyway.
由于无法判断某人是真的反对行为广告，还是坚持使用微软的默认设置，一些人可能会忽略DNT信号，继续点击。
常见考点例句：
- Why were regulators unable to better manage the system ?
- 为什么调控机构无法更好地管理这个体系？
- And mr singh seems unable to bridge that gap .
- 而看来辛格无力消除分歧两派间的隔阂。
- They were unable to explain why .
- 他们无法解释其中的原因。
- They were unable to contradict her strong ideals .
- 他们无法对抗她强大的意志力。
- I interrupted , unable to keep silent .
- 我无法再保持沉默，打断了他。
