How common it is
是否 appears often in everyday Chinese, so it is worth practicing early and reviewing often.
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Pronunciation focus
Say shì fǒu slowly first, then repeat it in a short phrase. Listen for the tone shape.
Usage note
是否表示是不是、有没有。
shì fǒu biǎo shì shì bu shì 、 yǒu méi yǒu。
Whether means if or whether.
Context note
是否常用于书面语和正式提问。
shì fǒu cháng yòng yú shū miàn yǔ hé zhèng shì tí wèn。
Whether is often used in written or formal questions.
5 examples
请告诉我是否可以。
qǐng gào sù wǒ shì fǒu kě yǐ。
Please tell me whether it is okay.
我不知道是否下雨。
wǒ bù zhī dào shì fǒu xià yǔ。
I do not know whether it will rain.
是否参加请回复。
shì fǒu cān jiā qǐng huí fù。
Please reply whether you will attend.
老师问我们是否明白。
lǎo shī wèn wǒ men shì fǒu míng bái。
The teacher asked whether we understood.
请确认是否正确。
qǐng què rèn shì fǒu zhèng què。
Please confirm whether it is correct.
5 mini stories
他在问是否还有票。
tā zài wèn shì fǒu hái yǒu piào。
He is asking whether there are still tickets.
我想知道是否需要帮助。
wǒ xiǎng zhī dào shì fǒu xū yào bāng zhù。
I want to know whether help is needed.
老师问大家是否准备好了。
lǎo shī wèn dà jiā shì fǒu zhǔn bèi hǎo le。
The teacher asked whether everyone was ready.
我不确定是否要去。
wǒ bú què dìng shì fǒu yào qù。
I am not sure whether to go.
请先检查是否写对了。
qǐng xiān jiǎn chá shì fǒu xiě duì le。
Please check first whether it is written correctly.