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auxiliary verb HSK 5 #97

Meanings

  1. 1 can; may; able to
  2. 2 to approve; to permit
  3. 3 but; however
  4. 4 certainly; really; very

Examples

Kěyǐ jìnlái ma?
May I come in?
Kěshì wǒ bù tóngyì.
But I don't agree.
Zhège dàngāo kě hǎochī le!
This cake is really delicious!

Tips

grammar
Four jobs in one character. As a modal verb: 可以 (can / may), + verb meaning -able as in 可怕 (scary) and 可爱 (cute). As a conjunction: 可是 (but). As an emphasis adverb before adjectives: + adj + means "really very ___" — 好吃 (really tasty). As a verb: 认可 (to approve / endorse).
mistakes
has a second reading used in exactly one compound: 可汗 (khan, the Mongol/Turkic ruler title). Everywhere else is read kě. If you see it in front of , switch to kè; otherwise default to kě.

Components

radical
kǒu
mouth
The mouth radical tucked inside the hook — this is the indexing radical and the meaning anchor. The original sense was an approving "yes!" shouted out loud, which is why every modern reading clusters around mouth-acts of permission and judgement: 可以 (may), 认可 (to approve), 可怕 (worthy of fearing). The mouth gives the green light.
phonetic
dīng
nail; man (graphic skeleton here)
The top horizontal and the long curving hook together outline a -shaped frame around the mouth. Historically this skeleton represents a curved haft or chanting-stick — the part of the original graph that wasn't the mouth. It also serves as a rough phonetic anchor: , , and share this skeleton even though modern readings have drifted apart.

Stroke Order