Definitely with 一定

Structure 一定 + (要/会) + Verb

一定 (yīdìng) means "for sure, without fail". With 要 it expresses firm intention or insistence: 你一定要来 = "you must come, no excuses". With 会 it expresses certainty about the future: 他一定会成功 = "he’s sure to succeed". It goes before the modal or verb.

Examples

你nǐ一yī定dìng要yào来lái。
You really must come.
明míng天tiān我wǒ一yī定dìng到dào。
I’ll definitely be there tomorrow.
他tā一yī定dìng会huì成chéng功gōng。
He’s sure to succeed.

Levels are indicative: they follow the standard Chinese Grammar Wiki (AllSet Learning) progression, not an official HSK 3.0 mapping. We never assign levels by eye.

This point and the other 370, with audio on every example, inside Wanyu.