再三 + Động từ (lên đi xuống lại)

A safety instruction is easy to miss

• The coach reminds the group several times to bring water: instructor教练jiào liànrepeatedly再三zài sānto remind提醒tí xǐngwe / us我们wǒ men带水dài shuǐ。 The repeated reminders show that the point matters.
• repeatedly再三zài sān does not tell us an exact count. Do not translate its three三sān as proof that there were exactly three reminders.

Put repeatedly再三zài sān before the repeated action

• Use subject + repeatedly再三zài sān + verb phrase: he他tārepeatedly再三zài sānstress强调qiáng diàothis这zhèpoint一点yì diǎn / I / me我wǒrepeatedly再三zài sānto think over考虑kǎo lǜ。 The familiar examples describe repeated emphasis or consideration.
• repeatedly再三zài sān(express) thanks感谢gǎn xiè presents repeated thanks. The surrounding account can show earnestness; repetition alone does not prove the listener agreed.

he他tārepeatedly再三zài sānstress强调qiáng diàothis这zhèpoint一点yì diǎn。

Separate repetition from a counted record

• she / her她tārepeatedly再三zài sānto remind提醒tí xǐngI / me我wǒ describes repeated reminders. she / her她tāto remind提醒tí xǐng(completed / change)了leI / me我wǒthree times三次sān cì explicitly counts three reminders.
• Both can fit the same event, but they contribute different information. Use next in sequence次cì when the exact number matters.

Compare an earnest action with a habit

• repeatedly再三zài sānto remind提醒tí xǐng highlights repeated attention to a particular point. he他tāgeneral总zǒngto arrive late迟到chí dào describes a recurring lateness pattern.
• Choose the familiar expression for your intended meaning. A less typical pairing is not proof that every possible context is ungrammatical.

Repetition does not prove a result

• teacher老师lǎo shīrepeatedly再三zài sānexplanation解释jiě shì，but可是kě shìI / me我wǒor / still还是hái shìnot不bùclear明白míng bái。 The explanation was repeated, but the learner still did not understand.
• Identify the repeated action and then read the outcome clause. Repeated thanks, warnings or explanations do not guarantee their effect.

Report the evidence accurately

• If a log records three reminders, she / her她tāto remind提醒tí xǐng(completed / change)了lethree times三次sān cì states that count clearly. If the point is repeated emphasis, she / her她tārepeatedly再三zài sānto remind提醒tí xǐng is suitable.
• In a new example, separate the action, any exact count and the actual outcome. Keep unknown details unknown.

Read the full reference: HSK 5 grammar — Adverbs.