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

1. haven't
2. hasn't
3. doesn't exist
4. to not have
5. to not be

1. Chinese character dictionary (containing entries for single characters, contrasted with a 詞典 cídiǎn, which has entries for words of one or more characters)
2. (coll.) dictionary

classifier: 本

1. to learn
2. to study
3. to imitate
4. science
5. -ology

1. to be (followed by substantives only)
2. correct; right; true
3. (respectful acknowledgement of a command) very well
4. (adverb for emphatic assertion)

1. very; quite
2. (also, often used before an adjective without intensifying its meaning, i.e. as a meaningless syntactic element)

1. difficult (to...)
2. problem
3. difficulty
4. difficult
5. not good

1. disaster
2. distress
3. to scold

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 跑堂兒的 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

1. matter
2. thing
3. item
4. work
5. affair

classifiers: 件, 樁, 回

1. alternative form of 倳 (zì, “to establish”)
2. alternative form of 剚 (zì, “to stab”)

1. bar (loanword) (serving drinks, or providing Internet access etc)
2. to puff (on a pipe etc)
3. (onom.) bang
4. abbr. for 貼吧 tiēbā

1. (modal particle indicating suggestion or surmise)
2. ...right?
3. ...OK?
4. ...I presume.