Word: 是否 (shìfǒu)

他问我是否喜欢中国菜。

Tā wèn wǒ shìfǒu xǐhuan Zhōngguó cài.

He asked if I liked Chinese food.

他问我是否很忙。

Tā wèn wǒ shìfǒu hěn máng.

He asked me if I was busy.

你是否同意手术？

Nǐ shìfǒu tóngyì shǒushù?

Do you give your consent to the operation?

你知道她是否会讲英语吗？

Nǐ zhīdào tā shìfǒu huì jiǎng Yīngyǔ ma?

Do you know whether she can speak English?

你知道我父亲是否还在办公室吗？

Nǐ zhīdào wǒ fùqīn shìfǒu hái zài bàngōngshì ma?

Do you know if my father is still in the office?

您是否正在考虑购买一台新电脑？

Nín shìfǒu zhèngzài kǎolǜ gòumǎi yì tái xīn diànnǎo?

Are you thinking of getting a new PC?

我不知道他是否爱我。

Wǒ bù zhīdào tā shìfǒu ài wǒ.

I wonder if he loves me.

我不知道她是否会来。

Wǒ bù zhīdào tā shìfǒu huì lái.

I don't know whether she will come.

我不知道我是否有时间做。

Wǒ bù zhīdào wǒ shìfǒu yǒu shíjiān zuò.

I don't know if I'll have time to do it.

我不知道是否该同意或拒绝。

Wǒ bù zhīdào shìfǒu gāi tóngyì huò jùjué.

I do not know whether to accept or to refuse.

我怀疑他是否会来。

Wǒ huáiyí tā shìfǒu huì lái.

I am doubtful whether he will come.

我怀疑你是否有东西可写。

Wǒ huáiyí nǐ shìfǒu yǒu dōngxi kě xiě.

I wonder if you have something to write with.

我怀疑这是否会发生。

Wǒ huáiyí zhè shìfǒu huì fāshēng.

I doubt if that would happen.

我想知道她的故事是否是真的。

Wǒ xiǎng zhīdào tā de gùshi shìfǒu shì zhēnde.

I wondered if her story was true.

无论你喜欢是否，你要学习法语。

Wúlùn nǐ xǐhuan shìfǒu, nǐ yào xuéxí Fǎyǔ.

You have to study French whether you like it or not.

让我们知道你是否能来。

Ràng wǒmen zhīdào nǐ shìfǒu néng lái.

Let us know whether you can come.

让我知道我是否需要改变。

Ràng wǒ zhīdào wǒ shìfǒu xūyào gǎibiàn.

Let me know if I need to change.

谁也不知道他是否爱她。

Shéi yě bù zhīdào tā shìfǒu ài tā.

No one knows whether he loves her or not.