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该gāishould; ought to

HSK 3word

By Chinese Copilot · Last updated

该 (gāi) means "should" or "ought to," and can also mean "probably" or "must be" when you make a guess. Put it before a verb for advice or expectation, much like 应该. It can also mark whose turn it is, as in 该你了. This entry covers those auxiliary and "turn" uses.

What does 该 mean?

  1. 1.

    should; ought toverb

  2. 2.

    probably; must beverb

  3. 3.

    to be someone's turn to do sthverb

What does the character 该 mean?

  • 该should; ought to

How do you use 该?

Grammar patterns

  1. 1

    Subj. + 该 + Verb (+ Obj.)

    Put 该 before a verb to express "should," the same slot as 应该.

  2. 2

    Subj. + 不 + 该 + Verb (+ Obj.)

    Negate with 不 before 该. 不该 means should not.

该 and 应该 both mean "should"; 应该 is the fuller form learners often meet first, while 该 is shorter in the same pattern.

Patterns

  • 该 + Verb

    你该去。

    Nǐ gāi qù.

    You should go.

  • 不该 + Verb

    不该告诉他。

    Bù gāi gàosu tā.

    Should not tell him.

  • 该 + Person + 了

    该你了。

    Gāi nǐ le.

    It's your turn.

What are some examples of 该 in a sentence?

  1. 你该去。

    Nǐ gāi qù.

    You should go.

  2. 不该告诉他。

    Bù gāi gàosu tā.

    You/One should not tell him.

  3. 他该到了。

    Tā gāi dào le.

    He should have arrived. / He has probably arrived.

  4. 该你了。

    Gāi nǐ le.

    It's your turn.

How is 该 different from 应应该

Both mean "should" before a verb. 应该 is the two-syllable form; 该 is the shorter one-character form in the same pattern (你该去 / 你应该去).

Only 该 fits here

该你了。

Gāi nǐ le.

It's your turn.

How is 该 used in a conversation?

  1. Speaker A:

    我该去吗?

    Wǒ gāi qù ma?

    Should I go?

  2. Speaker B:

    你该去。

    Nǐ gāi qù.

    You should go.

  3. Speaker A:

    该告诉他吗?

    Gāi gàosu tā ma?

    Should (we) tell him?

  4. Speaker B:

    不该告诉他。

    Bù gāi gàosu tā.

    We should not tell him.

  5. Speaker A:

    到我了吗?

    Dào wǒ le ma?

    Is it my turn?

  6. Speaker B:

    该你了。

    Gāi nǐ le.

    It's your turn.

Can you use 该 correctly?

0 of 3 answered
  1. 1.Fill in the blank: 你___去。
  2. 2.Which means "It's your turn"?
  3. 3.Fill in the blank: ___告诉他。 (should not tell him)

What should you learn next?

English glosses on this page are adapted from CC-CEDICT, published by MDBG (snapshot 2026-10-23), licensed under CC BY-SA 4.0. Glosses were edited for learners.