是否shì fǒuwhether (or not)

1. 1.

   whether (or not)adverb

• 是to be (followed by substantives only)
• 否not

See it in 不知道他是否会来 and 你是否同意

1. HSK 1

   我不知道他是否会来。

   Wǒ bù zhīdào tā shìfǒu huì lái.

   I don't know whether he will come.

2. HSK 3

   请问你是否同意？

   Qǐngwèn nǐ shìfǒu tóngyì?

   May I ask whether you agree?

1. 
   Speaker A:

   明天有考试吗？

   Míngtiān yǒu kǎoshì ma?

   Is there an exam tomorrow?

2. 
   Speaker B:

   我问老师是否明天考试。

   Wǒ wèn lǎoshī shìfǒu míngtiān kǎoshì.

   I asked the teacher whether the exam is tomorrow.

3. 
   Speaker A:

   老师怎么说？

   Lǎoshī zěnme shuō?

   What did the teacher say?

4. 
   Speaker B:

   老师说是明天。

   Lǎoshī shuō shì míngtiān.

   The teacher said it's tomorrow.

1. 1.Fill in the blank: 我不知道他___会来。 (I don't know whether he will come.)

   A是否B因为C所以
2. 2.What does 请问你是否同意？ mean?

   AMay I ask whether you agree?BMay I ask why you agree?CMay I ask when you agree?
3. 3.What does 是否 mean in 我问老师是否明天考试。?

   Awhether (or not)BbecauseCalready

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Related words

• 于是yú shìthereupon; as a result; consequently; thus; henceHSK 4
• 否则fǒu zéotherwise; if not; or (else)HSK 4
• 要是yào shi(coll.) ifHSK 4
• 只是zhǐ shìmerely; only; justHSK 3
• 总是zǒng shìalwaysHSK 3
• 可是kě shìbutHSK 3

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