=1

你

nǐ

you (informal, as opposed to courteous 您 nín)

=1

你

nǐ

you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)

=2

是

shì

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

=2

是

shì

variant of 是 shì

=3

个

gě

used in 自個兒 zìgěr

=3

个

gè

(classifier used before a noun that has no specific classifier) (bound form) individual

=3

个

gè

variant of 個 gè

4

乐观主义

lèguānzhǔyì

optimism

5

者

zhě

(after a verb or adjective) one who (is) ... (after a noun) person involved in ... -er -ist (used after a number or 後 hòu or 前 qián to refer to sth mentioned previously) (used after a term, to mark a pause before defining the term) (old) (used at the end of a command) (old) this