Frequency & Manner Adverbs: 偶尔、再次、偷偷
| 副词 | 意思 | 用法要点 | |------|------|----------| | 偶尔 ǒu ěr | occasionally | 频率很低，常与'才/只是'搭配，强调'不常发生' | | 再次 zài cì | once again | 书面语，指未来/正式场合的'再一次'；比口语的'又/再'更正式 | | 偷偷 tōu tōu | secretly | 描述动作方式，强调'不让别人发现'，放在动词前 |
✅ 他偶尔才去一次健身房。（低频率）
✅ 公司再次调整了政策。（正式场合的重复）
✅ 他偷偷把礼物放在桌上。（隐蔽的方式）
注意：再次多用于书面/正式语境；又/再更口语，且又常指已发生的重复。
Worked examples
| Chinese | Pinyin | English | What it shows |
|---|---|---|---|
| 他偶尔会去图书馆借几本书看。 | Tā ǒu ěr huì qù tú shū guǎn jiè jǐ běn shū kàn. | He occasionally goes to the library to borrow a few books. | 偶尔 marks a low, irregular frequency — this doesn't happen often. |
| 经过反复检查，医生再次确认了诊断结果。 | Jīng guò fǎn fù jiǎn chá, yī shēng zài cì què rèn le zhěn duàn jié guǒ. | After repeated checks, the doctor once again confirmed the diagnosis. | 再次 (formal 'once again') fits a professional, written-register context of repeating a careful procedure. |
| 孩子偷偷把糖藏在抽屉里，怕被妈妈发现。 | Hái zi tōu tōu bǎ táng cáng zài chōu ti lǐ, pà bèi māma fā xiàn. | The child secretly hid the candy in the drawer, afraid of being discovered by mom. | 偷偷 sits before the verb (把糖藏) to describe the sneaky manner of the action. |
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