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be unassisted
be unassisted 作表语，强调处于无人帮助的状态。
The elderly man was unassisted in the hospital corridor.
那位老人独自一人在医院走廊里，没有人帮忙。
无助的；独力的
先理解核心含义，再看它在真实句子里的用法。
无助的；独力的
without help or assistance; done by one's own efforts
The elderly man was unassisted in the hospital corridor.
那位老人独自一人在医院走廊里，没有人帮忙。
未受协助的；无帮助的。
Not assisted; without assistance
After the guide left, the hiker was unassisted and had to find the way back alone.
导游离开后，这名徒步者无人帮助，不得不独自找到回去的路。
The child felt unassisted when her older brother refused to help with the homework.
当哥哥拒绝帮忙做作业时，这个孩子感到无人帮助。
In the competition, the contestant was unassisted by the judges, so she solved every problem by herself.
比赛中，这名选手没有得到评委的帮助，所以她独自解决了每个问题。
be unassisted 作表语，强调处于无人帮助的状态。
The elderly man was unassisted in the hospital corridor.
那位老人独自一人在医院走廊里，没有人帮忙。
unassisted 放在动词宾语之后，补充说明动作是在无人协助时完成的。
She completed the marathon unassisted.
她在没有别人帮助的情况下跑完了马拉松。
unassisted by 后接提供帮助的人或事物，常位于句末。
He wrote his speech unassisted by any editor.
他在没有任何编辑协助的情况下写好了演讲稿。
Not this
She finished the work unassistedly.
Use this
She finished the work unassisted.
unassisted 是形容词，不要加 -ly 变成副词；这里作主语补足语，描述主语 she 的状态，而非修饰动作 finished。
Not this
He moved the furniture by unassisted.
Use this
He moved the furniture unassisted.
受汉语“独自/靠自己”影响误加了介词 by。unassisted 可直接放在动词后作主语补足语，不需要介词；也可说 by himself，但不能说 by unassisted。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
独立生活；无需他人帮助的生活
Many seniors prefer unassisted living as long as they can manage.
许多老人只要还能自理，就宁愿独立生活。
无协助分娩；自然分娩
She decided to have an unassisted childbirth at home.
她决定在家进行无协助分娩。
无人助攻的进球
He scored an unassisted goal in the final minute.
他在最后一分钟打进了一个无人助攻的进球。
自主学习
The app is designed for unassisted learning.
这款应用专为自主学习而设计。
独立行走
After the surgery, she could manage unassisted walking.
手术后，她能够独立行走了。
独立站立
The patient gradually improved until unassisted standing became possible.
病人逐渐好转，直到能够独立站立。
Use unassisted naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
un（不）+assist（帮助）+ed → 没人搭把手，只能独自完成。
语域：formal 常见场景：formal reports、medical documents、technical manuals unassisted 属于比较正式的表达，通常用于书面语、报告或技术说明中；日常口语里更常说 without help 或 on one's own。
以上词语均与 unassisted 押韵：重读音节后均为 /-ɪstɪd/。注意形近词 existed /ɪɡˈzɪstɪd/ 发音含 /z/，并不押韵。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.