Nánháimen qièqiè sīyǔ, wǒ zhīdào tāmen zhǔnbèi zuò xiē shénme. S ，。
The boys were whispering; I knew they were up to something.
Wǒ bù zhīdào, yě bùxiǎng zhīdào. S ，。
I don't know, nor do I care.
Wǒ xiǎng zhīdào zhège dōngtiān zài wǒmen de chéngshì huì bù huì xià xuě. S 。
I wonder if it will snow in our town this winter.
Tiānzhīdào tā qù nǎ'erle. S 。
Who knows where he has gone.
Nǐ zhīdào yīnyuè jiā shi me shíhòu lái zhè'er ma? S ？
Do you know when the musician will come here?
Shuí dōu zhīdào zhīzú cháng lè. S 。
Everybody knows that happiness is in contentment.
Dàjiā dōu zhīdào tā de yīngyǔ shuō dé hěn hǎo. S 。
Everybody knew she could speak English well.
Ràng wǒ zhīdào wǒ shìfǒu xūyào gǎibiàn. S 。
Let me know if I need to change.
Tā zhīdào rúhé zuò shōuyīnjī. S 。
He knows how to make a radio.
Wǒ xiǎng zhīdào tā qù nǎ'erle. S 。
I want to know where she went.
Wǒ xiǎng zhīdào zhè jù huà de yìsi. S 。
I wonder what this phrase means.
Kàn nǐ bìng bù gǎndào jīngyà, nǐ kěndìng yǐjīng zhīdàole. S ，。
You're not even phased, you must have known all along!
Wǒ zhīdào tā de míngzì, dàn bù zhīdào tā zhǎng shénme yàng. S ，。
I know him by name, but not by sight.
Wǒ xiǎng zhīdào zhè xūyào yòng duōjiǔ shíjiān. S 。
I want to know how long it'll take.
Wǒ xiǎng zhīdào shuí láile. S 。
I wonder who has come.
“Dòng lǐ fāshēngle shénme? Wǒ hěn hàoqí.”“Wǒ yīdiǎn yě bù zhīdào.” S “？。”“。”
"What's going on in the cave? I'm curious." "I have no idea."
Wǒ xiǎng zhīdào tā fāshēng shénme shìle. S 。
I wonder what has happened to her.
Wǒ bù zhīdào wǒ shìfǒu yǒu shíjiān zuò. S 。
I don't know if I'll have time to do it.
Wǒ míngtiān xūyào zhīdào. S 。
I need to know tomorrow.
Wǒ bù zhīdào tā shì shénme shíhòu jiéhūn de. S 。
I don't know when she got married.
Chéng qiān shàng wàn de rén xiǎng yào zhīdào dá'àn. S 。
Thousands of people wanted to know the answer.
Wǒ bù zhīdào wǒ hái yǒu méiyǒu. S 。
I don't know if I still have it.
Yǒu yītiān wǒ qù fàguó shì wú kě bìmiǎn de, wǒ zhǐshì bù zhīdào héshí. S ，。
It is inevitable that I go to France someday, I just don't know when.