City University of Hong Kong CLASS CLASS
Making Sense of Grammar
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asked Nov 25, 2020 in Questions about Chinese Grammar by Mickey (7,360 points) | 252 views

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Although yídìng一定 and bìxū必须 can both mean ‘must’, yídìng一定 is better to be understood as ‘definitely’. There are some circumstances that they are not exchangeable.

1. When the we want to guarantee something, we should use yídìng一定, for example,

Wǒ      yídìng       nǔlì   xuéxí

   I     definitely   hard   study

‘I will definitely work hard.’

2. When we want to estimate something, we should use yídìng一定, for example,

Míngtiān       yídìng      xiàyǔ

Tomorrow   definitely    rain

‘It will definitely rain tomorrow.’
answered Nov 25, 2020 by Mickey (7,360 points)

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1,785 questions
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53,026 users