3. 一定 yí dìng · OLD HSK 3 / NEW HSK 2
adv. of affirmation. 肯定副词 kěndìngfùcí▸certainly; by all means; must
(1) to express guarantee
- Bié pà, wǒ yídìng huì bāng nǐ de.
别怕,我一定会帮你的。
(Do)n’t be-afraid, I surely will help you.
- Děng wǒ zhuàn le qián, yídìng gěi nǐ mǎi yì tái zuì hǎo de gāngqín.
等我赚了钱,一定给你买一台最好的钢琴。
Wait (after) I make money, (I) surely (will) buy one “tai” (of) the best piano for you.
(2) to express determination, usually used with Modal V. 要 or 会
- Wǒ yídìng yào zìjǐ xiǎng bànfǎ.
我一定要自己想办法。
I must (by my) self think method.
- Wǒ míngtiān miànshì yídìng bù néng chídào.
我明天面试一定不能迟到。
I (for) tomorrow(’s) interview must cannot arrive-late.
(3) to express requirement or hope for other people, usually used with Modal V. 要
- Kāichē de shíhou yídìng bú yào zháojí.
开车的时候一定不要着急。
(At the) time (when) driving-vehicle (people) must not (be) impatient-and-anxious.
- Nǐ yídìng yào duō lǐjiě fùmǔ de xīnkǔ.
你一定要多理解父母的辛苦。
You must more understand-and-sympathize (your) parents’ hardworking-effort.
(4)to indicate estimation
- Tā xiànzài yídìng yǐjīng kāishǐ tǎoyàn wǒ le.
他现在一定已经开始讨厌我了。
He now must (has) already started to hate me.
- Zhè ge háizi zhǎng dà le yídìng hěn cōngming.
这个孩子长大了一定很聪明。
This “ge” (of) child (after) growing-up must (be) very clever.