该gāishould; ought to
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.
should; ought toverb
- 2.
probably; must beverb
- 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
Subj. + 该 + Verb (+ Obj.)
Put 该 before a verb to express "should," the same slot as 应该.
- 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?
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?
- Speaker A:
我该去吗?
Wǒ gāi qù ma?
Should I go?
- Speaker B:
你该去。
Nǐ gāi qù.
You should go.
- Speaker A:
该告诉他吗?
Gāi gàosu tā ma?
Should (we) tell him?
- Speaker B:
不该告诉他。
Bù gāi gàosu tā.
We should not tell him.
- Speaker A:
到我了吗?
Dào wǒ le ma?
Is it my turn?
- Speaker B:
该你了。
Gāi nǐ le.
It's your turn.
Can you use 该 correctly?
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Related words
- 应该yīng gāiought to; should; mustHSK 3
- 要yàoto want; to need; to ask forHSK 1
- 可以kě yǐcan; may; possible; able toHSK 1
- 需要xū yàoto need; to want; to demand; to requireHSK 3
- 不bùno; not so; (bound form) not; un-HSK 1
- 会huìcan; to have the skill; to know how toHSK 1
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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.