A lunatic 指行为疯狂、鲁莽，往往还很危险的人。这是非正式用词：He drives like a lunatic. 它不指睡着后走动的人；那是 sleepwalker，这种现象叫 sleepwalking。
lunatic：这次词义能选对吗？
写一句英语，检查词义是否符合内容并查看错误解释。
本次检查比平时稍久，完成后反馈会自动显示在这里。
drive/behave + like a lunatic; a complete + lunatic; a lunatic + idea/plan; a sleepwalker / sleepwalking (not lunatic)
- My neighbour thinks I'm a lunatic for swimming in the lake in November.
- He was shouting at the printer like a lunatic because it had eaten his report.
- Hiking up the mountain in flip-flops was a lunatic idea, and we soon regretted it.
修改原因
修改前My little brother is a lunatic: he walks around the flat at night in his sleep.
修改后My little brother is a sleepwalker: he walks around the flat at night in his sleep.
有些语言中，与 lunatic 相似的词表示梦游者。但英语里的 my little brother is a lunatic 听起来是在说弟弟疯疯癫癫。表示梦游者要用另一个词 sleepwalker，也有对应的动词：He sometimes sleepwalks.
Lunatic 语气强烈，带有情绪。朋友做出鲁莽举动后，你可能说 You're a lunatic!，但用它称呼精神疾病患者会冒犯对方。形容奇怪或冒险的计划时，crazy 温和一些：a crazy idea。
动手练习
A man on a motorbike was racing through the park at full speed, like a complete ___.
查看答案
lunatic — 摩托车骑手在公园里全速飞驰，行为鲁莽又危险，因此选 lunatic。Sleepwalker 是在睡梦中走动的人，不符合这里的情境。
描述一次有人在路上鲁莽行事的经历。说清楚发生在哪里，以及对方具体做了什么。
On a narrow country road near Kazan, some lunatic overtook three lorries on a blind bend.
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