记忆方法
记忆“informal”这个单词，可以将其拆解为“in-form-al”。想象一个“inform”的人（形式）是在不正式（in-form-al）场合出现，这样的场景有助于记忆这个单词的含义为“非正式的”。
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中文词源
informal 非正式的，随便的
in-,不，非，formal,正式的。即不正式的，随便的。
英语词源
- informal (adj.)
- mid-15c., "lacking form; not in accordance with the rules of formal logic," from in- (1) "not, opposite of" + formal. Meaning "irregular, unofficial" is from c. 1600. Sense of "done without ceremony" is from 1828. Related: Informally.
权威例句
- 1. Council members are due to have informal discussions later on today.
- 委员会成员定于今日晚些时候进行非正式讨论。
- 2. The two leaders will retire to Camp David for informal discussions.
- 两位领导人将到戴维营进行非正式讨论。
- 3. Our aim was that these meetings be unstructured and informal.
- 我们的目的是，这些会议不事先进行精心组织，要随意一些。
- 4. I would like it to be an informal occasion.
- 我希望把它办得不那么正式。
- 5. His friend was less good-looking, but a lot more informal and relaxed.
- 他的朋友没那么英俊，却随意、放松得多。
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