- 夏虫不可以语冰 xiàchóngbùkěyǐyǔbīng narrow-mindeda summer insect cannot discuss ice; limited by one's narrow experience
- 可以意会，不可言传 kěyǐyìhuì, bùkěyánchuán ineffablecan be understood, but not described (idiom, from Zhuangzi); mysterious and subtle
- 得可以 dekěyǐ extremely(coll.) very; awfully (used as a stative verb suffix)
- 星星之火，可以燎原 xīngxingzhīhuǒ, kěyǐliáoyuán sparkA single spark can start a huge blaze; an insignificant cause can have a massive effect.
- 不可以 bùkěyǐ may not
- 还可以 háikěyǐ not badmoderately good; acceptable or passable.
- 他山之石可以攻玉 tāshānzhīshíkěyǐgōngyù external wisdomTo utilize foreign expertise, talent, or the successful experiences of others to effectively develop a project or nation.