| 1 | 一 | 一 | yī | yi1 | one; 1; single; a (article); as soon as; entire; whole; all; throughout; "one" radical in Chinese characters (Kangxi radical 1); also pr. [yao1] for greater clarity when spelling out numbers digit by digit | | |
| 2 | 一些 | 一些 | yī xiē | yi1 xie1 | some; a few; a little; (following an adjective) slightly ...er | | |
| 3 | 一样 | 一樣 | yī yàng | yi1 yang4 | same; like; equal to; the same as; just like | | |
| 4 | 一切 | 一切 | yī qiè | yi1 qie4 | everything; every; all | | |
| 5 | 第一 | 第一 | dì yī | di4 yi1 | first; number one; primary | | |
| 6 | 一定 | 一定 | yī dìng | yi1 ding4 | surely; certainly; necessarily; fixed; a certain (extent etc); given; particular; must | | |
| 7 | 一点 | 一點 | yī diǎn | yi1 dian3 | a bit; a little; one dot; one point | | |
| 8 | 一下 | 一下 | yī xià | yi1 xia4 | (used after a verb) give it a go; to do (sth for a bit to give it a try); one time; once; in a while; all of a sudden; all at once | | |
| 9 | 进一步 | 進一步 | jìn yī bù | jin4 yi1 bu4 | one step further; to move forward a step; further onwards | | |
| 10 | 一直 | 一直 | yī zhí | yi1 zhi2 | straight (in a straight line); continuously; always; from the beginning of ... up to ...; all along | | |
| 11 | 统一 | 統一 | tǒng yī | tong3 yi1 | to unify; to unite; to integrate | | |
| 12 | 一部分 | 一部分 | yī bù fen | yi1 bu4 fen5 | portion; part of; subset | | |
| 13 | 一天 | 一天 | yī tiān | yi1 tian1 | one day | | |
| 14 | 一起 | 一起 | yī qǐ | yi1 qi3 | in the same place; together; with; altogether (in total) | | |
| 15 | 之一 | 之一 | zhī yī | zhi1 yi1 | one of (sth); one out of a multitude; one (third, quarter, percent etc) | | |
| 16 | 一致 | 一致 | yī zhì | yi1 zhi4 | unanimous; identical (views or opinions) | | |
| 17 | 一边 | 一邊 | yī biān | yi1 bian1 | one side; either side; on the one hand; on the other hand; doing while | | |
| 18 | 同一 | 同一 | tóng yī | tong2 yi1 | identical; the same | | |
| 19 | 一阵 | 一陣 | yī zhèn | yi1 zhen4 | a burst; a fit; a peal; a spell (period of time) | | |
| 20 | 一面 | 一面 | yī miàn | yi1 mian4 | one side; one aspect; simultaneously... (and...); one's whole face | | |
| 21 | 一会儿 | 一會兒 | yī huì r | yi1 hui4 r5 | a moment; a while; in a moment; now...now...; also pr. [yi1 hui3 r5] | | |
| 22 | 第一次 | 第一次 | dì yī cì | di4 yi1 ci4 | the first time; first; number one | | |
| 23 | 一系列 | 一系列 | yī xì liè | yi1 xi4 lie4 | a series of; a string of | | |
| 24 | 另一方面 | 另一方面 | lìng yī fāng miàn | ling4 yi1 fang1 mian4 | on the other hand; another aspect | | |
| 25 | 唯一 | 唯一 | wéi yī | wei2 yi1 | only; sole; variant of 唯一 ; only; sole | | |