一定
yī dìng
HSK level: HSK 3
Meaning
surely; certainly; definitely; fixed; settled; a certain ...; a given ...
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Characters
Examples
汤姆一定疯了。
Tāng mǔ yī dìng fēng le.
Tom must be crazy.
他一定会成功。
Tā yī dìng huì chéng gōng.
He is sure to succeed.
你一定睡著了。
Nǐ yī dìng shuì zhù le.
You must've been asleep.