1. if
2. in case
3. in the event that

1. to think (about)
2. to think of; to devise
3. to think (that); to believe (that)
4. to desire; to want (to)
5. to miss (feel wistful about the absence of)

1. to understand
2. to realize
3. to find out

1. to understand
2. to realize
3. to find out

1. a; an; one
2. the whole (afternoon, summer vacation etc)

1. Combination of the numeral 一 (“one”) and the generic classifier 個／个: a; an; one
2. same

classifier: 個

1. (after a suppositional clause) in that case; then
2. (after a clause of action) as soon as; immediately after
3. (same as 就是 jiùshì) merely; nothing else but; simply; just; precisely; exactly
4. only; as little as
5. as much as; as many as
6. to approach; to move towards
7. to undertake; to engage in
8. (often followed by 着 zhe) taking advantage of
9. (of food) to go with
10. with regard to; concerning
11. (pattern: 就 jiù ... 也 yě ...) even if ... still ...
12. (pattern: 不 bù ... 就 jiù ...) if not ... then must be ...

1. to have to
2. must
3. compulsory
4. necessarily

1. to learn
2. to study

1. (pronoun) this
2. (adjective) this

classifier: 個

1. of; ~'s (possessive particle)
2. (used after an attribute when it modifies a noun)
3. (used at the end of a declarative sentence for emphasis)
4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂儿的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
5. also pr. dì or di in poetry and songs

classifiers: 門, 段