| 可以HSK 2 | kě yǐ | can; may; possible; able to; not bad; pretty good | |
| 以及HSK 5 | yǐ jí | as well as; too; and | |
| 所以HSK 2 | suǒ yǐ | therefore; as a result; so; the reason why | |
| 以后 | yǐ hòu | after; later; afterwards; following; later on; in the future | |
| 以来HSK 5 | yǐ lái | since (a previous event) |
| 1 | I can help you. | |
| 2 | You can't judge a book by its cover. | |
| 3 | Can I help you? | |
| 4 | Finally, I can rest now. | |
| 5 | You can copy documents here. |