| 的 | de | of; ~'s (possessive particle); (used after an attribute when it modifies a noun); (used at the end of a declarative sentence for emphasis); (used after a noun, verb or adjective to form a nominal expression, as in 皮革的[pi2 ge2 de5] "one made of leather" or 跑堂兒的|跑堂儿的[pao3 tang2 r5 de5] "a waiter (literally, one who runs back and forth in a restaurant)" or 新的[xin1 de5] "new one"); also pr. [di4] or [di5] in poetry and songs; really and truly; a taxi; a cab (abbr. for 的士[di1 shi4]); (bound form) bull's-eye; target | 115 | Lv 1 |
| 是 | shì | to be (followed by substantives only); correct; right; true; (respectful acknowledgement of a command) very well; (adverb for emphatic assertion); variant of 是[shi4] | 35 | Lv 1 |
| 在 | zài | to exist; to be alive; (of sb or sth) to be (located) at; (used before a verb to indicate an action in progress) | 26 | Lv 1 |
| 火箭 | huǒ jiàn | rocket; CL:枚[mei2] | 23 | Lv 39 |
| 一 | yī | one; 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 | 22 | Lv 1 |
| 會 | huì | can; to have the skill; to know how to; to be likely to; to be sure to; to meet; to get together; meeting; gathering; (suffix) union; group; association; (bound form) a moment (Taiwan pr. [hui3]); (bound form) to reckon accounts | 20 | Lv 1 |
| 不 | bù | no; not so; (bound form) not; un- | 19 | Lv 1 |
| 尾翼 | wěi yì | empennage (of an aircraft); fletching (of an arrow); fins (of a missile, rocket etc); rear spoiler (of a car) | 19 | Unranked |
| 要 | yào | to want; to need; to ask for; will; shall; about to; need to; should; if (same as 要是[yao4 shi5]); (bound form) to demand; to coerce; (bound form) important | 16 | Lv 1 |
| 這 | zhè | (pronoun) this; these; (coll.) this; (bound form) this; the (followed by a noun); (bound form) this; these (followed by a classifier) (in this sense, commonly pr. [zhei4], esp. in Beijing) | 15 | Lv 1 |
| 但 | dàn | but; yet; however; still; merely; only; just | 14 | Lv 1 |
| 也 | yě | also; too; as well; (not ...) either; (used after a verbal or nominal expression X to indicate that X is an extreme or unexpected case) even (X); (literary) particle having functions similar to 啊[a5]; surname Ye | 12 | Lv 1 |
| 把 | bǎ | to hold; to grasp; to hold a baby in position to help it urinate or defecate; handlebar; classifier: handful, bundle, bunch; classifier for things with handles; (used to put the object before the verb: 把[ba3] + {noun} + {verb}); handle | 12 | Lv 1 |
| 被 | bèi | quilt; to cover (with); (literary) to suffer (a misfortune); used to indicate passive voice (placed before the doer of the action like "by" in English passive-voice sentences, or, if the doer is not mentioned, before the verb); (since c. 2009) (sarcastic or jocular) used to indicate that the following word should be regarded as being in air quotes (as in 被旅遊|被旅游[bei4 lu : 3 you2] to "go on a trip") | 12 | Lv 1 |
| 速度 | sù dù | speed; rate; velocity; (music) tempo; CL:個|个[ge4] | 11 | Lv 19 |
| 太空船 | tài kōng chuán | spaceship | 10 | Unranked |
| 年 | nián | year; grain; harvest (old); CL:個|个[ge4]; variant of 年[nian2]; surname Nian | 10 | Lv 2 |
| 時 | shí | o'clock; time; when; hour; season; period; old variant of 時|时[shi2]; surname Shi | 10 | Lv 2 |
| 氣流 | qì liú | stream of air; airflow; slipstream; draft; breath; turbulence (of aircraft) | 10 | Unranked |
| 讓 | ràng | to yield; to permit; to let sb do sth; to have sb do sth; to make sb (feel sad etc); by (indicates the agent in a passive clause, like 被[bei4]) | 10 | Lv 1 |