1

可惜

kěxī

it is a pity what a pity unfortunately

=2

你

nǐ

you (informal, as opposed to courteous 您 nín)

=2

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.)

3

不會

bùhuì

improbable unlikely will not (act, happen etc) not able not having learned to do sth (coll.) (Tw) don't mention it not at all

4

跳舞

tiàowǔ

to dance