| 可以 | kě yǐ | can; may |
| 所以 | suǒ yǐ | therefore; as a result |
| 以上 | yǐ shàng | that level or higher; that amount or more |
| 以后 | yǐ hòu | after; later |
| 以来 | yǐ lái | since (a previous event) |
| 以前 | yǐ qián | before; formerly |
| 以下 | yǐ xià | that level or lower; that amount or less |
| 以为 | yǐ wéi | to think (i.e. to take it to be true that ...) (Usually there is an implication that the notion is mistaken – except when expressing one's own current opinion.) |
| 难以 | nán yǐ | hard to (predict, imagine etc) |
| 加以 | jiā yǐ | in addition; moreover |
| 以外 | yǐ wài | apart from; other than |
| 之所以 | zhī suǒ yǐ | (after a noun N and before a predicate P) the reason why N P; Example: 我之所以討厭他|我之所以讨厌他[wo3 zhi1 suo3 yi3 tao3 yan4 ta1] "the reason why I dislike him (is ...)" |
