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