Meaning of shì bù shì:
shì bù shì
是不是
Adverb
is or isn't; whether or not
Nǐ shì bù shì wàngjìle zhè jiàn shìqíng?
你是不是忘记了这件事情？
Did you forget about this matter or not?
Nǐ shì bù shì jīntiān wàngjì dài sǎn le?
你是不是今天忘记带伞了？
Did you forget to bring an umbrella today?
Particle
yes or no
Zhè shì yī gè hǎo wèntí, shì bù shì?
这是一个好问题，是不是？
This is a good question, isn't it?
