HSK 7–9 grammar · adverb
必定
必定 — certainly, bound to
Pattern
+ +
( ) can be left out · other words may come before, between and after
How it works
必定 expresses the speaker's firm inference that something must be so or must happen. It is stronger and more formal than 一定, and unlike 一定 it is not used to make a promise about one's own behaviour.
Examples
努力必定有回报。
Nǔlì bìdìng yǒu huíbào.
Hard work is bound to pay off.
他必定已经知道了。
Tā bìdìng yǐjīng zhīdào le.
He must already know.
Related
See it in a story
In the app, 必定 is underlined wherever it appears in the stories you read, and practised with sentences from them. Free.